US4005771A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Speed retarding governor
Assignee: SCM Corp
•
Filing: 1975-11-10
•
Granted: 1977-02-01
•
Expires: 1995-11-10
Abstract
Abstract A speed retarding governor particularly adaptable to a carriage of a typewriter wherein the speed of a traversing typewriter carriage is retarded by the cooperation of a plurality of arcuate pivotless lightweight flyweights that are floatably disposed within a cylindrical governor housing. A drive pin fixed to a rotating typewriter escapement toothed drive wheel engages an end of a first flyweight which abuts a second flyweight whereby both flyweights rotate therewith. The centrifugal force thus generated forces the two felt-lined flyweights outwardly against the internal peripheral surface of the governor housing which has now been rendered stationary, to produce a retarding force necessary to retard the speed of the traversing carriage.
Inventors
- 👤 Samuel D. Cappotto
- 👤 John E. Dodge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:06
CPC Classifications
B; B41; B41J; B41J19/00; B41J19/02
Claims Analysis
Total Claims: 40
Claim 1
Independent Claim
108 words
A carriage retarding governor for typewriters that includes a traversable carriage, the movement of which is regulated by an escapement mechanism that includes a rotatable toothed escapement drive wheel that is coupled to a carriage rack by an integral shaft and pinion gear, the carriage retarding governor comprising: a rotatable housing having an arcuate wall; a pivotless segment disposed within said housing; means on said housing for selectively rendering said housing stationary; and means for engaging and urging said segment to rotate under the influence of the movement of the carriage and be centrifugally displaced and wedged against said stationary housing thereby retarding the traverse of the carriage.
Claim 2
Dependent Claim
108 words
A carriage retarding governor for typewriters that includes a traversable carriage, the movement of which is regulated by an escapement mechanism that includes a rotatable toothed escapement drive wheel that is coupled to a carriage rack by an integral shaft and pinion gear, the carriage retarding governor comprising: a rotatable housing having an arcuate wall; a pivotless segment disposed within said housing; means on said housing for selectively rendering said housing stationary; and means for engaging and urging said segment to rotate under the influence of the movement of the carriage and be centrifugally displaced and wedged against said stationary housing thereby retarding the traverse of the carriage.
Claim 3
Dependent Claim
39 words
A carriage retarding governor as defined in claim 1 wherein the outer periphery of said segment is arcuate and having its end portions complimentary with the inner surface of said wall of said housing when said segment is rotating.
Claim 4
Dependent Claim
31 words
A carriage retarding governor as defined in claim 2 wherein the periphery of said segment is lined with resilient material for providing a quieter and smoother cooperation with said housing wall.
Claim 5
Dependent Claim
32 words
A carriage retarding governor as defined in claim 1 wherein said segment is floatably disposed within said housing for free movement relative to said housing when said segment is urged to rotate.
Claim 6
Dependent Claim
47 words
A carriage retarding governor as defined in claim 1 wherein said engaging means is a rigid pin on the drive wheel that projects into the path of said segment for abutting an end of said segment to urge said segment to rotate when the carriage is traversing.
Claim 7
Dependent Claim
38 words
A carriage retarding governor as defined in claim 5 wherein said housing includes a plurality of teeth disposed on said housing engageable by a tooth of the escapement rocker of the escapement mechanism for rendering said housing stationary.
Claim 8
Dependent Claim
26 words
A carriage retarding governor as defined in claim 1 wherein said housing includes means for adjusting the contact between said toothed drive wheel and said housing.
Claim 9
Dependent Claim
39 words
A carriage retarding governor as defined in claim 7 wherein said adjusting means includes a plurality of cam surfaces disposed on said housing and an adjusting plate co-axially supported with said housing for engaging said plurality of cam surfaces.
Claim 10
Dependent Claim
29 words
A carriage retarding governor as defined in claim 8 wherein said adjusting plate includes a pair of engaging lugs that are biased towards said cam surfaces for engagement therewith.
Claim 11
Dependent Claim
35 words
A carriage retarding governor as defined in claim 8 wherein said plurality of cam surfaces project from said housing at different heights for providing different adjustment levels. between said toothed drive wheel and said housing.
Claim 12
Dependent Claim
114 words
A carriage retarding governor for typewriters that includes a traversable carriage, the movement of which is regulated by an escapement mechanism that includes a rotatable toothed drive wheel that is coupled to a carriage rack by an integral shaft and pinion gear, the carriage retarding governor comprising; a rotatable housing having an arcuate wall; a pair of pivotless segments disposed within said housing; means on said housing for selectively rendering said housing stationary; and means on the toothed drive wheel for engaging and urging said segments to rotate under the influence of the movement of the carriage and be centrifugally displaced and wedged against said stationary housing thereby retarding the traverse of the carriage.
Claim 13
Dependent Claim
114 words
A carriage retarding governor for typewriters that includes a traversable carriage, the movement of which is regulated by an escapement mechanism that includes a rotatable toothed drive wheel that is coupled to a carriage rack by an integral shaft and pinion gear, the carriage retarding governor comprising; a rotatable housing having an arcuate wall; a pair of pivotless segments disposed within said housing; means on said housing for selectively rendering said housing stationary; and means on the toothed drive wheel for engaging and urging said segments to rotate under the influence of the movement of the carriage and be centrifugally displaced and wedged against said stationary housing thereby retarding the traverse of the carriage.
Claim 14
Dependent Claim
39 words
A carriage retarding governor as defined in claim 11 wherein the outer periphery of said segments is arcuate and having their end portions complimentary with the inner surface of said wall of said housing when said segments are rotating.
Claim 15
Dependent Claim
31 words
A carriage retarding governor as defined in claim 12 wherein the periphery of said segments is lined with resilient material for providing a quieter and smoother cooperation with said housing wall.
Claim 16
Dependent Claim
32 words
A carriage retarding governor as defined in claim 11 wherein said segments are floatably disposed within said housing for free movement relative to said housing when said segments are urged to rotate.
Claim 17
Dependent Claim
50 words
A carriage retarding governor as defined in claim 11 wherein said engaging means includes a rigid pin on the drive wheel that projects into the path of one of the said segments for abutting an end of said segment to urge said segment to rotate when the carriage is traversing.
Claim 18
Dependent Claim
39 words
A carriage retarding governor as defined in claim 15 wherein said housing means includes a plurality of teeth disposed on said housing engageable by a tooth of the escapement rocker of the escapement mechanism for rendering said housing stationary.
Claim 19
Dependent Claim
27 words
A carriage retarding governor as defined in claim 16 wherein said housing means further includes means for adjusting the contact between said toothed wheel and said housing.
Claim 20
Dependent Claim
39 words
A carriage retarding governor as defined in claim 17 wherein said adjusting means includes a plurality of cam surfaces disposed on said housing and an adjusting plate co-axially supported with said housing for engaging said plurality of cam surfaces.
Claim 21
Dependent Claim
29 words
A carriage retarding governor as defined in claim 18 wherein said adjusting plate includes a pair of engaging lugs that are biased toward said cam surfaces for engagement therewith.
Claim 22
Dependent Claim
37 words
A carriage retarding governor as defined in claim 18 wherein said plurality of cam surfaces project from said housing and are at different heights for providing different adjustment levels between said toothed drive wheel and said housing.
Claim 23
Dependent Claim
55 words
A carriage retarding governor as defined in claim 15 wherein said engaging means further includes a second rigid pin on the drive wheel that projects into the path of another of said segments for abutting an end of said segment to urge said segment to rotate with said other segment when the carriage is traversing.
Claim 24
Dependent Claim
39 words
A carriage retarding governor as defined in claim 15 wherein said housing means includes a plurality of teeth disposed on said housing engageable by a tooth of the escapement rocker of the escapement mechanism for rendering said housing stationary.
Claim 25
Dependent Claim
28 words
A carriage retarding governor as defined in claim 22 wherein said housing means further includes means for adjusting the contact between said toothed drive wheel and said housing.
Claim 26
Dependent Claim
39 words
A carriage retarding governor as defined in claim 23 wherein said adjusting means includes a plurality of cam surfaces disposed on said housing and an adjusting plate co-axially supported with said housing for engaging said plurality of cam surfaces.
Claim 27
Dependent Claim
29 words
A carriage retarding governor as defined in claim 24 wherein said adjusting plate includes a pair of engaging lugs that are biased towards said cam surfaces for engagement therewith.
Claim 28
Dependent Claim
37 words
A carriage retarding governor as defined in claim 25 wherein said plurality of cam surfaces project from said housing and are at different heights for providing different adjustment levels between said toothed drive wheel and said housing.
Claim 29
Dependent Claim
124 words
A carriage retarding governor for typewriters that includes a traversable carriage, the movement of which is incrementally regulated by an escapement mechanism that includes a rotatable toothed drive wheel that is coupled to a carriage rack by an integral shaft and pinion gear, the carriage retarding governor comprising in combination: a rotatable cylindrical housing; a pivotless arcuate segment freely disposed within said housing; a plurality of teeth on said housing selectively engageable by the escapement mechanism for rendering said housing stationary; and; a rigid stud on the rotatable drive wheel for engaging and urging said segment to rotate under the influence of the movement of the carriage and be centrifugally displaced and wedged against said stationary housing thereby retarding the traverse of the carriage.
Claim 30
Dependent Claim
124 words
A carriage retarding governor for typewriters that includes a traversable carriage, the movement of which is incrementally regulated by an escapement mechanism that includes a rotatable toothed drive wheel that is coupled to a carriage rack by an integral shaft and pinion gear, the carriage retarding governor comprising in combination: a rotatable cylindrical housing; a pivotless arcuate segment freely disposed within said housing; a plurality of teeth on said housing selectively engageable by the escapement mechanism for rendering said housing stationary; and; a rigid stud on the rotatable drive wheel for engaging and urging said segment to rotate under the influence of the movement of the carriage and be centrifugally displaced and wedged against said stationary housing thereby retarding the traverse of the carriage.
Claim 31
Dependent Claim
125 words
A carriage retarding governor for typewriters that includes a traversable carriage, the movement of which is incrementally regulated by an escapement mechanism that includes a rotatable toothed drive wheel that is coupled to a carriage rack by an integral shaft and pinion gear, the carriage retarding governor comprising in combination: a rotatable cylindrical housing; a pair of arcuate segments freely disposed within said housing; a plurality of teeth of said housing selectively engageable by the escapement mechanism for rendering said housing stationary; and; a rigid stud on the rotatable drive wheel for engaging and urging said segments to rotate under the influence of the movement of the carriage and be centrifugally displaced and wedged against said stationary housing thereby retarding the traverse of the carriage.
Claim 32
Dependent Claim
125 words
A carriage retarding governor for typewriters that includes a traversable carriage, the movement of which is incrementally regulated by an escapement mechanism that includes a rotatable toothed drive wheel that is coupled to a carriage rack by an integral shaft and pinion gear, the carriage retarding governor comprising in combination: a rotatable cylindrical housing; a pair of arcuate segments freely disposed within said housing; a plurality of teeth of said housing selectively engageable by the escapement mechanism for rendering said housing stationary; and; a rigid stud on the rotatable drive wheel for engaging and urging said segments to rotate under the influence of the movement of the carriage and be centrifugally displaced and wedged against said stationary housing thereby retarding the traverse of the carriage.
Claim 33
Dependent Claim
152 words
A carriage retarding governor for typewriters that includes a traversable carriage, the movement of which is regulated by an escapement mechanism that includes a rotatable toothed drive wheel that is coupled to a carriage rack by an integral shaft and pinion gear, the carriage retarding governor comprising: a rotatable housing having an arcuate wall; a pair of arcuate segments freely disposed within said housing; means on said housing for selectively rendering said housing stationary; a rigid pin on the toothed drive wheel for engaging ends of said segments for urging said segments to rotate under the influence of the movement of the carriage and be wedged against said stationary housing to initially retard the traverse of the carriage and thereafter be centrifugally displaced against said stationary housing to further retard the carriage traverse; and varying means on said arcuate segments to provide a wedging force of said segments against said stationary housing.
Claim 34
Dependent Claim
152 words
A carriage retarding governor for typewriters that includes a traversable carriage, the movement of which is regulated by an escapement mechanism that includes a rotatable toothed drive wheel that is coupled to a carriage rack by an integral shaft and pinion gear, the carriage retarding governor comprising: a rotatable housing having an arcuate wall; a pair of arcuate segments freely disposed within said housing; means on said housing for selectively rendering said housing stationary; a rigid pin on the toothed drive wheel for engaging ends of said segments for urging said segments to rotate under the influence of the movement of the carriage and be wedged against said stationary housing to initially retard the traverse of the carriage and thereafter be centrifugally displaced against said stationary housing to further retard the carriage traverse; and varying means on said arcuate segments to provide a wedging force of said segments against said stationary housing.
Claim 35
Dependent Claim
21 words
A carriage retarding governor as defined in claim 29 wherein said varying means is disposed at the ends of said segments.
Claim 36
Dependent Claim
41 words
A carriage retarding governor as defined in claim 30 wherein said ends of said segments are angled relative to said housing for increasing the wedging force of said segments against said stationary housing in response to engagement by said rigid pin.
Claim 37
Dependent Claim
131 words
A carriage retarding governor for typewriters that includes a traversable carriage, the movement of which is regulated by an escapement mechanism that includes a rotatable toothed drive wheel that is coupled to a carriage rack by an integral shaft and pinion gear, the carriage retarding governor comprising: a rotatable housing having an arcuate wall; a pivotless segment disposed within said housing; means on said housing for selectively rendering said housing stationary; means for engaging and urging said segment to rotate under the influence of the movement of the cartridge and be centrifugally displaced and wedged against said stationary housing thereby retarding the traverse of the carriage; and means on said segment for limiting the peripheral contact of the ends of said segment against said housing wall to provide an initial braking.
Claim 38
Dependent Claim
131 words
A carriage retarding governor for typewriters that includes a traversable carriage, the movement of which is regulated by an escapement mechanism that includes a rotatable toothed drive wheel that is coupled to a carriage rack by an integral shaft and pinion gear, the carriage retarding governor comprising: a rotatable housing having an arcuate wall; a pivotless segment disposed within said housing; means on said housing for selectively rendering said housing stationary; means for engaging and urging said segment to rotate under the influence of the movement of the cartridge and be centrifugally displaced and wedged against said stationary housing thereby retarding the traverse of the carriage; and means on said segment for limiting the peripheral contact of the ends of said segment against said housing wall to provide an initial braking.
Claim 39
Dependent Claim
19 words
A carriage retarding governor as defined in claim 32 wherein said limiting means includes a pair of spaced pads.
Claim 40
Dependent Claim
17 words
A carriage retarding governor as defined in claim 33 wherein said pads are made of resilient material.
References Cited (Backward Citations)
GB166442A
Cited
US2270460A
Cited
US2784829A
Cited
US2758692A
Cited
US2829754A
Cited
US3645363A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-02-01 | 1980-08-02 | 1981-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-01 | 1984-08-02 | 1985-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-01 | 1988-08-02 | 1989-02-01 | $7700.00 | Window Closed / Lapsed |