US3689172A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Precision machine tool stop
Assignee: Individual
•
Filing: 1970-11-25
•
Granted: 1972-09-05
•
Expires: 1990-11-25
Abstract
Abstract A precision machine tool stop mechanism to control the amount of movement of a machine tool. The mechanism comprises a main shaft member with individual engagement increments formed thereon at predetermined intervals, a detachable housing body movable longitudinally along the shaft, controllable pawl members within the housing adapted to engage and disengage the shaft member at select increments, a pawl actuating collar extending to the pawl members within the housing and adapted to control actuation of the pawl members in and out of engagement with the shaft member such that when in engagement the pawls and shaft member are locked to form a unitary structure and when out of engagement the housing is allowed to move freely along the main shaft to any select increment position. A fine adjustment sleeve may be carried by the housing and movable in fine increments in a direction parallel to the axis of the main shaft member.
Inventors
- 👤 William E Stites
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:58
CPC Classifications
B; B23; B23Q; B23Q16/00; B23Q16/001; Y; Y10; Y10T; Y10T408/00; Y10T408/96
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
81 words
A machine tool stop comprising: a. a shaft; and b. stop means with a central opening for receiving said shaft and with a stop engaging surface, said stop means being movable axially along said shaft, said stop means comprising a locking member movable between positions of engagement and disengagement with said shaft, said stop means comprising rotatable actuating means rotatable about the axis of said shaft for moving said locking member between the positions of engagement and disengagement with said shaft.
Claim 2
Dependent Claim
81 words
A machine tool stop comprising: a. a shaft; and b. stop means with a central opening for receiving said shaft and with a stop engaging surface, said stop means being movable axially along said shaft, said stop means comprising a locking member movable between positions of engagement and disengagement with said shaft, said stop means comprising rotatable actuating means rotatable about the axis of said shaft for moving said locking member between the positions of engagement and disengagement with said shaft.
Claim 3
Dependent Claim
56 words
A stop as claimed in claim 1 wherein said stop means includes a block with a central opening for receiving said shaft and with a radially disposed slot in which said locking member is disposed for radial movement relative to the axis of said shaft for movement between positions of engagement and disengagement with said shaft.
Claim 4
Dependent Claim
123 words
A stop as claimed in claim 2 wherein said stop means comprises an axially disposed pin disposed in engagement with said locking member for imparting movement thereto, said rotatable actuating means includes a central opening for receiving said shaft and is formed with a slot for receiving said pin, said slot of said rotatable actuating means being formed to impart radial displacement to said pin, whereby rotation of said rotatable actuating means about the axis of said shaft displaces said pin to impart movement to said locking member within the slot formed in said block for displacing said locking member radially relative to the axis of said shaft to move said locking member between the positions of engagement and disengagement with said shaft.
Claim 5
Dependent Claim
38 words
A stop as claimed in claim 3 wherein said shaft is formed with axially spaced projections therealong and whereIn said locking member selectively engages one or more of said projections for locking said stop means to said shaft.
Claim 6
Dependent Claim
18 words
A stop as claimed in claim 4 wherein said shaft includes means for attachment to a machine tool.
Claim 7
Dependent Claim
47 words
A stop as claimed in claim 3 in which said shaft includes guide track means parallel to the axis of said shaft, and said stop means includes grooves for receiving in sliding guiding engagement said guide track means for sliding said stop means axially along said shaft.
Claim 8
Dependent Claim
45 words
A stop as claimed in claim 4 wherein said projections are in the form of a plurality of axially spaced apart ratchet teeth and the locking member is in the form of a pawl, the teeth and the pawl being shaped for complementary locking engagement.
Claim 9
Dependent Claim
29 words
A stop as claimed in claim 3 wherein said stop means includes a vernier adjustment for the fine adjustment of the position of the stop surface along said shaft.
Claim 10
Dependent Claim
25 words
A stop as claimed in claim 8 in which said vernier adjustment is in the form of a vernier thimble having a threaded inner surface.
Claim 11
Dependent Claim
47 words
A stop as claimed in claim 7 wherein said shaft is formed with a plurality of parallel sets of axially spaced ratchet teeth and said stop means includes a plurality of angularly spaced pawls, said pawls being arranged to engage said parallel sets of ratchet teeth respectively.
Claim 12
Dependent Claim
52 words
A stop as claimed in claim 10 in which said shaft includes an axially disposed guide track between successive parallel sets of teeth, and said stop means includes a groove between successive pawls, said grooves receive said tracks respectively in sliding guided engagement for sliding said stop means axially along said shaft.
Claim 13
Dependent Claim
165 words
A stop as claimed in claim 10 wherein said stop means includes a block with a centrally opening for receiving said shaft and with a plurality of radially disposed, angularly spaced slots, there being a pawl disposed in each of said slots in said block for radial movement relative to the axis of said shaft for movement between positions of engagement and disengagement with said shaft, said stop means comprises an axially disposed pin disposed in engagement with a pawl for imparting movement thereto, said stop means including a rotation actuating means with a central opening for receiving said shaft and with a plurality of slots for receiving said pins respectively, whereby rotation of said rotatable actuation member about the axis of said shaft displaces said pins to impart movement to said pawls within said slots of said block for displacing said pawls radially relative to the axis of said shaft to move said pawls between the positions of engagement and disengagement with said shaft.
References Cited (Backward Citations)
US2664768A
Cited
US3037405A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-05 | 1976-03-06 | 1976-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-05 | 1980-03-06 | 1980-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-05 | 1984-03-06 | 1984-09-05 | $7700.00 | Window Closed / Lapsed |