Patent US1902708A successfully refreshed from Google Patents.
Patent US3672251A successfully refreshed from Google Patents.
US3672251A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Saw
Assignee: Individual
•
Filing: 1970-10-05
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Granted: 1972-06-27
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Expires: 1990-10-05
Abstract
Abstract A saw comprising a base plate 1 (FIG. 1), a disc 7 rotatably mounted on the base plate; clamping means disposed over the disc 7 and comprising forward elements 3, 3a and a backstop element composed of arms 18a, 18b (FIG. 2), and the arcuate member 19 joining the said arms, said clamping means being disposed over the disc 7, and a saw assembly 13, 14, 15, 16, 17 pivotally mounted on the machine via pin 11 (FIG. 1). The arcuate member 19 of the backstop is in bearing relation with the mount of the saw assembly adjacent the upper level of the arcuate member 19a, 19b. To accommodate different size workpieces, an auxiliary backstop 28 (FIG. 4) is provided to permit positioning a small workpiece in a more forward position with respect to the path of the saw blade, permitting more effective operation of the saw.
Inventors
- 👤 Leopold Jagers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:25
CPC Classifications
B; B23; B23D; B23D47/00; B23D47/04; B23D45/00; B23D45/04; B23D45/042; B23D45/044; Y; Y10; Y10T; Y10T83/00; Y10T83/263; Y10T83/748; Y10T83/7487; Y10T83/7567; Y10T83/7593; Y10T83/7607; Y10T83/7613; Y10T83/762; Y10T83/768; Y10T83/7684; Y10T83/7693; Y10T83/7755; Y10T83/7788; Y10T83/869; Y10T83/8773
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
216 words
In a circular saw machine for cold-sawing metals comprising: a. a base plate, b. a disc for supporting the workpiece and rotatable mounted on the base plate for rotation thereon, c. laterally adjustable clamping means for engaging the forward portion of the workpiece, d. backstop clamping means for engaging the rearward side of the workpiece including a clamping strip disposed on each side of the cutting plane joined together by a rearwardly extending semi-circular arcuate member, secured to the baseplate, e. a saw assembly pivotally mounted on the machine comprising a saw blade and means for driving the saw blade, said mounting being for generally vertical advance of the saw blade relative to the disc for cutting of the workpiece, the improvement which comprises: f. the arcuate member of the backstop having a rearwardly disposed, bearing surface which is cylindrical with respect to the axis of the disc disposed adjacent the upper level of the arcuate member, g. said disc comprising a saw assembly mount disposed to the rear and outwardly of said backstop arcuate member, for said pivot mounting of the saw assembly on the machine, h. said saw assembly mount comprising bearing means for complementary bearing engagement with the bearing surface of the arcuate member adjacent the plane of cutting of the saw blade.
Claim 2
Dependent Claim
216 words
In a circular saw machine for cold-sawing metals comprising: a. a base plate, b. a disc for supporting the workpiece and rotatable mounted on the base plate for rotation thereon, c. laterally adjustable clamping means for engaging the forward portion of the workpiece, d. backstop clamping means for engaging the rearward side of the workpiece including a clamping strip disposed on each side of the cutting plane joined together by a rearwardly extending semi-circular arcuate member, secured to the baseplate, e. a saw assembly pivotally mounted on the machine comprising a saw blade and means for driving the saw blade, said mounting being for generally vertical advance of the saw blade relative to the disc for cutting of the workpiece, the improvement which comprises: f. the arcuate member of the backstop having a rearwardly disposed, bearing surface which is cylindrical with respect to the axis of the disc disposed adjacent the upper level of the arcuate member, g. said disc comprising a saw assembly mount disposed to the rear and outwardly of said backstop arcuate member, for said pivot mounting of the saw assembly on the machine, h. said saw assembly mount comprising bearing means for complementary bearing engagement with the bearing surface of the arcuate member adjacent the plane of cutting of the saw blade.
Claim 3
Dependent Claim
21 words
Saw according to claim 1, said saw assembly mount comprising supporting means extendinG downwardly to supported engagement with the base plate.
Claim 4
Dependent Claim
21 words
Saw according to claim 1, the disc being in engagement with the base plate about the entire circumference of the disc.
Claim 5
Dependent Claim
19 words
Saw according to claim 3, and means for drawing the disc downwardly into tight fitting engagement with base plate.
Claim 6
Dependent Claim
20 words
Saw according to claim 1, said disc having means for discharge of cuttings and coolant from beneath the saw blade.
Claim 7
Dependent Claim
28 words
Saw according to claim 5, said discharge means comprising a downwardly extending groove, the disc having an opening communicating with said groove for receiving cuttings and coolant therefrom.
Claim 8
Dependent Claim
25 words
Saw according to claim 1, wherein said base plate is outfitted with an opening disposed outwardly of the disc, for discharge of cuttings and coolant.
Claim 9
Dependent Claim
73 words
Saw according to claim 1, the saw blade axis during the pivoting thereof for sawing, moving along a substantially vertical plane, said plane being spaced several centimenters from the engaging surface of the backstop clamping means, for sawing of a square cutoff, and an auxiliary removable backstop means for mounting on the first mentioned backstop means for selective spacing of the workpiece from said substantially vertical plane of the axis of the saw.
Claim 10
Dependent Claim
64 words
Saw according to claim 8, said spacing of the plane of the axis of the saw and the engaging surface of the first-mentioned backstop being about 3- 8 centimeters, the radius of the saw assembly from the pivot mounting thereof to the axis of the saw being about 40- 80 centimeters and the corresponding range for the cutting arc of the saw being 20*-35*.
Claim 11
Dependent Claim
43 words
Saw according to claim 8, said auxiliary backstop having two backstop arms whose faces are aligned with one another and have on their underside a recess parallel to said faces whose shape is the same as the shape of the first mentioned backstop.
Claim 12
Dependent Claim
40 words
Saw according to claim 10, the arms of the auxiliary backstop being joined together by a joining member (28d) which, when the auxiliary backstop bar attachment is mounted onto the first-mentioned backstop, lies above the arcuate of the first-mentioned backstop.
Claim 13
Dependent Claim
41 words
Saw according to claim 11, wherein a slot suitable to accommodate the sawblade flares backward from the vise at an angle of about 45* to at least one side, both in the first-mentioned backstop bars and the auxiliary backstop bar attachment.
Claim 14
Dependent Claim
22 words
Saw according to claim 8, wherein the auxiliary backstop is displaceable in its longitudinal direction on the first-mentioned backstop bars (18a, 18B).
Claim 15
Dependent Claim
14 words
Saw according to claim 13, wherein means are provided for limiting said longitudinal displacement.
Claim 16
Dependent Claim
90 words
Saw according to claim 8, wherein the laterally adjustable clamping means (c) has on each side of the sawblade close to the plane of the sawblade in a square cutoff of the workpiece, a jaw which is advanceable toward the first-mentioned backstop, and that one jaw is adjustable in relation to the other jaw at right angles to the direction of advance of the jaws to such an extent that the two jaws grip the workpiece on both sides of the sawblade even in the case of a 45*miter cut.
References Cited (Backward Citations)
US1481569A
Cited
US3574315A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |