Filter press

Claim 2

A filter press comprising a fixed first head, a fixed rear head, a movable head disposed therebetween, a plurality of filter plates arranged in side-by-side relation in a row between said first head and said movable head and having on both sides thereof hangers protruding horizontally and suspended by said hangers slidably on both side bars spanned between both sides of said first head and both sides of said rear head, and filter-platefeeding members having a pair of pawls capable of reciprocating back and forth below both sides of said train of filter plates and capable of being freely raised, said pair of pawls being adapted to make one pawl thereof pass under the hanger of a filter and catch the same thereby to feed the filter plate and adapted to make the other pawl thereof abut against the hanger of the filter plate thereby to bring said filter-plate-feeding member to a stop.

Claim 3

A filter press as claimed in claim 1 in which the filter-plate-feeding members are fitted to endless chains moved by a reversible motor in either direction and reciprocated back and forth by movement of said endless chains under both sides of said train of filter plates.

Claim 4

A filter press as claimed in claim 1 in which the filter-plate-feeding members have rollers on the front and rear portions of the lower ends thereof and are thereby adapted to travel on the guide rails respectively provided on side bars.

Claim 5

A filter press as claimed in claim 1 which the pair of pawls of the filter-plate-feeding members are normally urged by springs to be raised to a height at which to abut against the hanger of the filter plate.

Claim 6

A filter press as claimed in claim 1 in which the pair of pawls of the filter-plate-feeding members are raised aslant toward the centers of the filter-plate-feeding members and placed in symmetrical relation.

Claim 7

A filter press comprising a fixed first head, a fixed rear head, a movable head disposed between said both heads, a plurality of filter plates disposed in side-by-side relation in a row between said first head and said movable head and having on both sides thereof hangers protruding horizontally from both sides thereof and suspended by said hangers slidably on both side bars spanned between both sides of said first head and both sides of said rear head, and filter-plate-feeding members having a pair of pawls reciprocating back and forth below both sides of said train of filter plates, said first head and said movable head being respectively provided with pawl depressors, said pawl depressors being equal in length to the hangers of the filter plates and adapted to be positioned such that the space between the pawl depressors and the next adjacent filter plates, during pressing, becomes equal to the respective spaces between the hangers of other filter plates, said pair of pawls being fitted by pins to the filter-plate-feeding members so as to be freely raised and rotatable, one pawl of said pair passing under the hanger of a filter plate and catching the same to feed the filter plate, the other pawl thereof being adapted to abut against the hanger of the filter plate so as to bring said filter-plate-feedIng members to a stop, and adapted to change the positions of pins with respect to said both pawls.

Claim 8

A filter press comprising a fixed first head, a fixed rear head, a movable head disposed between said both heads, a plurality of filter plates disposed in side-by-side relation in a row between said first head and said movable head and having on both sides thereof hangers protruding horizontally from both sides thereof and suspended by said hangers slidably on both side bars spanned between both sides of said first head and both sides of said rear head, and filter-plate-feeding members having a pair of pawls reciprocating back and forth below both sides of said train of filter plates, said first head and said movable head being respectively provided with pawl depressors, said pawl depressors being equal in length to the hangers of the filter plates and adapted to be positioned such that the space between the pawl depressors and the next adjacent filter plates, during pressing, becomes equal to the respective spaces between the hangers of other filter plates, said pair of pawls being fitted by pins to the filter-plate-feeding members so as to be freely raised and rotatable, one pawl of said pair passing under the hanger of a filter plate and catching the same to feed the filter plate, the other pawl thereof being adapted to abut against the hanger of the filter plate so as to bring said filter-plate-feedIng members to a stop, and adapted to change the positions of pins with respect to said both pawls.

Claim 9

A filter press as claimed in claim 6 in which said pair of pawls are respectively provided with transverse slots, pins that serve respectively as fulcrums are slidably fitted into said slots, the pins of feed pawls are interposed in the middle between the hanger of the filter plate to be fed in the state of a stop pawl abutting against the hanger of the filter plate and the hanger of the filter plate to be fed next, the pin of the stop pawl, in the state of the filter plate having been fed, is positioned nearer to the feeding side than the hanger of the filter plate fed and the pawl depressor of the movable head or first head that had been retreated previous to said filter plate or the hanger of the filter plate that had been fed previous to said filter plate.

Claim 10

A filter press as claimed in claim 6 in which the pawl depressor of the movable head is tapered on the front and rear surfaces thereof toward the lower end thereof.

Claim 11

A filter press comprising a fixed first head, a fixed rear head, a movable head disposed therebetween, a plurality of filter plates arranged in side-by-side relation in a row between said first head and said movable head and having on both sides thereof hangers protruding horizontally from both sides thereof and suspended by said hanger slidably on both side bars spanned between both sides of said first head and both sides of said rear head, endless chains disposed parallelly on both sides of said train of filter plates and having each one filter-plate-feeding member, a symmetrical pair of pawls fitted to the filter-plate-feeding member so as to be freely raised and which are urged by springs to be normally raised to abut against the hanger of the filter plate, and a reversible motor adapted to drive said endless chains in either direction by changeover of rotation of the motor, said first head and said movable head being respectively provided with pawl depressors, said pawl depressors being equal in length to the hangers of the filter plates and adapted to be positioned such that the space between the pawl depressors and the next adjacent filter plates, during depression, becomes equal to the respective spaces between the hangers of other filter plates, said filter-plate-feeding members being longitudinally provided with long grooves into each of which a slide block is slidably fitted, said each slide block having in the front and rear portions thereof pins respectively protruding horizontally from the front and rear portions thereof, the front pin of said pins being fitted into the transverse slot formed in the rear half of a front pawl and the rear pin thereof being fitted into the transverse slot formed in the front half of a rear pawl, the upper end of a changeover lever swingably fitted by a pivot to said filter-plate-feeding member being inserted to the notch formed in the center of said slide block.

Claim 12

A filter press comprising a fixed first head, a fixed rear head, a movable head disposed therebetween, a plurality of filter plates arranged in side-by-side relation in a row between said first head and said movable head and having on both sides thereof hangers protruding horizontally from both sides thereof and suspended by said hanger slidably on both side bars spanned between both sides of said first head and both sides of said rear head, endless chains disposed parallelly on both sides of said train of filter plates and having each one filter-plate-feeding member, a symmetrical pair of pawls fitted to the filter-plate-feeding member so as to be freely raised and which are urged by springs to be normally raised to abut against the hanger of the filter plate, and a reversible motor adapted to drive said endless chains in either direction by changeover of rotation of the motor, said first head and said movable head being respectively provided with pawl depressors, said pawl depressors being equal in length to the hangers of the filter plates and adapted to be positioned such that the space between the pawl depressors and the next adjacent filter plates, during depression, becomes equal to the respective spaces between the hangers of other filter plates, said filter-plate-feeding members being longitudinally provided with long grooves into each of which a slide block is slidably fitted, said each slide block having in the front and rear portions thereof pins respectively protruding horizontally from the front and rear portions thereof, the front pin of said pins being fitted into the transverse slot formed in the rear half of a front pawl and the rear pin thereof being fitted into the transverse slot formed in the front half of a rear pawl, the upper end of a changeover lever swingably fitted by a pivot to said filter-plate-feeding member being inserted to the notch formed in the center of said slide block.

Claim 13

A filter press as claimed in claim 9 in which conical recesses for the prevention of slip are formed at specified intervals on the front and rear portions of the underside of the slide block and adapted to receive into either thereof a nonslip ball supported by a coiled push spring.

Claim 14

A filter press comprising a fixed first head, a fixed rear head, a movable head disposed therebetween, a plurality of filter plates arranged in side-by-side relation in a row between said first head and said movable head and having on both sides thereof hangers protruding horizontally from both sides thereof and suspended by said hangers slidably on both side bars spanned between both sides of said first head and both sides of said rear head, endless chains disposed parallelly on both sides of said train of filter plates and having each one filter-feeding member, a symmetrical pair of pawls fitted to the filter-plate-feeding member so as to be freely raised and which are urged by springs to be normally raised to abut against the hanger of the filter plaTe, and a reversible motor adapted to drive said endless chains in either direction by change of rotation of the motor, said first and said movable head being respectively provided with pawl depressors, said pawl depressors being equal in length to the hangers of the filter plates and adapted to be positioned such that the space between the pawl depressors and the next adjacent filter plates, during pressing, becomes equal to the respective spaces between the hangers of other filter plates, said filter-plate-feeding member being horizontally provided with long grooves into each of which a slide block is slidably fitted, said each side block having on the front and rear portions thereof pins respectively protruding horizontally from the front and rear portions thereof, the front pin of said pins being fitted into the transverse slot formed in the rear half of a front pawl and the rear pin of said pins being fitted into the transverse slot formed in the front half of a rear pawl, the upper end of a changeover lever swingably fitted by a pivot to said filter-plate-feeding member being inserted to the notch formed in the center of said slide block, a projection against which the projected lower end of said changeover lever abuts, when said filter-plate-feeding member is moved on, being formed on the front and rear portions of the outside of each side bar.

Claim 15

A filter press comprising a fixed first head, a fixed rear head, a movable head disposed therebetween, a plurality of filter plates arranged in side-by-side relation in a row between said first head and said movable head and having on both sides thereof hangers protruding horizontally from both sides thereof and suspended by said hangers slidably on both side bars spanned between both sides of said first head and both sides of said rear head, endless chains disposed parallelly on both sides of said train of filter plates and having each one filter-feeding member, a symmetrical pair of pawls fitted to the filter-plate-feeding member so as to be freely raised and which are urged by springs to be normally raised to abut against the hanger of the filter plaTe, and a reversible motor adapted to drive said endless chains in either direction by change of rotation of the motor, said first and said movable head being respectively provided with pawl depressors, said pawl depressors being equal in length to the hangers of the filter plates and adapted to be positioned such that the space between the pawl depressors and the next adjacent filter plates, during pressing, becomes equal to the respective spaces between the hangers of other filter plates, said filter-plate-feeding member being horizontally provided with long grooves into each of which a slide block is slidably fitted, said each side block having on the front and rear portions thereof pins respectively protruding horizontally from the front and rear portions thereof, the front pin of said pins being fitted into the transverse slot formed in the rear half of a front pawl and the rear pin of said pins being fitted into the transverse slot formed in the front half of a rear pawl, the upper end of a changeover lever swingably fitted by a pivot to said filter-plate-feeding member being inserted to the notch formed in the center of said slide block, a projection against which the projected lower end of said changeover lever abuts, when said filter-plate-feeding member is moved on, being formed on the front and rear portions of the outside of each side bar.

Claim 16

A filter press comprising a fixed first head, a fixed rear head, a movable head disposed therebetween, a plurality of filter plates arranged in side-by-side relation in a row between said first head and said movable head end having on both sides thereof hangers protruding horizontally from both sides thereof and suspended by said hangers slidably on both side bars spanned between both sides of said first head and both sides of said rear head, endless chains disposed parallelly on both sides of said train of filter plates and having each one filter-plate-feeding member, a symmetrical pair of pawls fitted to said filter-plate-feeding member so as to be freely raised and which are urged by springs to be normally raised to abut against the hanger of the filter plate, and a reversible motor adapted to drive said endless chains and a control mechanism for a motor adapted to give signs for positive or negative rotation of the reversible motor by the tension of the endless chains, said tension being produced by the stop of the endless chains due to the prevention of the filter-plate-feeding member from movement by striking of the filter-plate-feeding member against an obstacle

Claim 17

A filter press comprising a fixed first head, a fixed rear head, a movable head disposed therebetween, a plurality of filter plates arranged in side-by-side relation in a row between said first head and said movable head end having on both sides thereof hangers protruding horizontally from both sides thereof and suspended by said hangers slidably on both side bars spanned between both sides of said first head and both sides of said rear head, endless chains disposed parallelly on both sides of said train of filter plates and having each one filter-plate-feeding member, a symmetrical pair of pawls fitted to said filter-plate-feeding member so as to be freely raised and which are urged by springs to be normally raised to abut against the hanger of the filter plate, and a reversible motor adapted to drive said endless chains and a control mechanism for a motor adapted to give signs for positive or negative rotation of the reversible motor by the tension of the endless chains, said tension being produced by the stop of the endless chains due to the prevention of the filter-plate-feeding member from movement by striking of the filter-plate-feeding member against an obstacle

Claim 18

A filter press as claimed in claim 12 in which the motor control mechanism comprises a endless power transmission chain that transmit power to endless driving chains each having a filter-plate-feeding member, driven chain wheels of said endless power transmission chain fixed to the same shaft as each front chain wheel of said endless driving chains, main driving chain wheel attracted in the direction of said driven chain wheel by the tension produced in said endless driving chains, idle chain wheels pressed from outside into contact with said endless power transmission chain by springs fitted to swingable levers, and switches for giving signs for changeover of the direction of rotation of a reversible motor, said switches being adapted for operation by said swingable levers being brought into contact therewith by the lever being swung by that slack of said endless power transmission chain which is produced when said main driving chain wheel is attracted in the direction of said driven chain wheel.

Claim 19

A filter press comprising a fixed first head, a fixed rear head, a movable head disposed therebetween, a plurality of filter plates arranged in side-by-side relation in a row between said first head and said movable head and having on both sides thereof hangers protruding horizontally from both sides thereof and suspended by said hangers slidably on both side bars spanned between both sides of said first head and both sides of said rear head, endlesS chains disposed parallelly on both sides of said train of filter plates and having each one filter-feeding member, a symmetrical pair of pawls fitted to said filter-plate-feeding member so as to be freely raised and which are urged by springs to be normally raised to abut against the hanger of the filter plate, and a reversible motor adapted to drive said endless chains, and a control mechanism for a motor adapted to give signs for positive or negative rotation of the reversible motor by the tension of the endless chain, said tension being produced by the stop of the endless chains due to the prevention of the filter-plate-feeding member from movement by striking of the filter-plate-feeding member against an obstacle, said first head and said movable head being respectively provided with pawl depressors, said pawl depressors being equal in length to the hangers of the filter plates and adapted to be positioned such that the space between the pawl depressors and the next adjacent filter plates, during pressing, becomes equal to the respective spaces between the hangers of other filter plates, said filter-plate-feeding member being longitudinally provided with long grooves into each of which a slide block is slidably fitted, said slide block having in the front and rear portions thereof pins respectively protruding horizontally from the front and rear portions thereof, the front pin of said pins being fitted into the transverse slot formed in the rear half of a front pawl and the rear pin of said pins being fitted into the transverse slot formed in the front half of a rear pawl, the upper end of a changeover lever swingably fitted by a pivot to said filter plate feeding member being inserted into the notch formed in the center of said slide block, a projection against which the projected lower end of said changeover lever abuts, when said filter-plate-feeding member is moved on, being formed on the front and rear portions of the outside of each side bar.

Claim 20

A filter press comprising a fixed first head, a fixed rear head, a movable head disposed therebetween, a plurality of filter plates arranged in side-by-side relation in a row between said first head and said movable head and having on both sides thereof hangers protruding horizontally from both sides thereof and suspended by said hangers slidably on both side bars spanned between both sides of said first head and both sides of said rear head, endlesS chains disposed parallelly on both sides of said train of filter plates and having each one filter-feeding member, a symmetrical pair of pawls fitted to said filter-plate-feeding member so as to be freely raised and which are urged by springs to be normally raised to abut against the hanger of the filter plate, and a reversible motor adapted to drive said endless chains, and a control mechanism for a motor adapted to give signs for positive or negative rotation of the reversible motor by the tension of the endless chain, said tension being produced by the stop of the endless chains due to the prevention of the filter-plate-feeding member from movement by striking of the filter-plate-feeding member against an obstacle, said first head and said movable head being respectively provided with pawl depressors, said pawl depressors being equal in length to the hangers of the filter plates and adapted to be positioned such that the space between the pawl depressors and the next adjacent filter plates, during pressing, becomes equal to the respective spaces between the hangers of other filter plates, said filter-plate-feeding member being longitudinally provided with long grooves into each of which a slide block is slidably fitted, said slide block having in the front and rear portions thereof pins respectively protruding horizontally from the front and rear portions thereof, the front pin of said pins being fitted into the transverse slot formed in the rear half of a front pawl and the rear pin of said pins being fitted into the transverse slot formed in the front half of a rear pawl, the upper end of a changeover lever swingably fitted by a pivot to said filter plate feeding member being inserted into the notch formed in the center of said slide block, a projection against which the projected lower end of said changeover lever abuts, when said filter-plate-feeding member is moved on, being formed on the front and rear portions of the outside of each side bar.