US1352990A - Gear-remover or pinion-puller - Google Patents

Description

C. REINKER. GEAR REMovER 0H P|N|0N FULLER.

APPLICATIO FILED DEC. 2.7, 19|8.

Patented Sept. 14, 1920.

UNITED STATES PATENT OFFICE.

CHRISTIAN' REINKER, OF LAKEWOOD, OHIO.

GEAR-REMOVEB OR PINION-PUIiLEIt.

Specification of Letters Patent. Patented Sept. 114:, .1920.

Application led December 27, 1918. Serial No. 268,541.

pinion puller comprising a means for gripping a gear or pinion and means connected therewith adapted to engage a shaft and exert a powerful pull, whereby a gear may be easily and quickly removed from a shaft, for example,va gear fixed on the end of anarmature shaft, all'without injury to the gear and shaft or anjT bearing part thereof. rIhe device is of especial utilityin electric car repair shops where it is a daily occurrence and necessity to remove the gears from armatures] Ordinarily this is a difficult and lengthy operation'and frequently damaging to the armature or bearing parts thereof, but with my invention the work is speedily and safely accomplished.

In the `accompanying drawing, Figure 1.. is a longitudinal section of the device in grappling position upon a gear. Fig. Qis

an end View of the device, and Figs?) a sideview thereof. Fig. 4`isl a perspective view of one of the grappling members.

In detail, the device consists of a heavy metal plate 2 which'- is round and notched at uniform distances radially at its edge to receive the ["-shaped shanks 3 of separate grappling hooks or members 4. A band 5 is removably affixed upon .the plate by screws, and the grappling members are thereby Vloosely held in place. Each member 4 is rounded transversely and provided with a hook end or flange 6 which is also rounded or of segmental form and wider -than the shank end of the member. The outer orl free end of each member is also beveled at its outer rounded side,` or in other words ofv end 9 adapted to beengaged by a wrench to turn the same. rIhe plate is also preferably provided with a square hub or extension 11 for wrench .engagement also, although an integral arm or handle might be used in lieu of the wrench so that in turning the screw suitable resistance may be offered to prevent the plate from turning. Ordinarily, a wrench five tolsix feet long is required toturn the screw when the device is engaged with a gear, and this length of lever indicates the power required to remove a gear. Different sized rings 7 are used for different sized gears.

In use, the grappling members are spread apart and slipped over the end of the`gea1 14 until the hook ends are-adapted to engage vbehind the end vfaces of the teeth of the gear and then the locking ring is pressed outward over the wedge portions of the members to force the hook ends into interlocking engagement with the gear. The inner end of the screw is thus placed opposite the end of the'armature shaft 15 and when turned by la llong wrench as stated the screw lwill press against the end .of the vshaft and exert a powerful pull on the grappling members and-gear; and in action, 'the gear if exceptionally tight on the shaft will resist the pulluntil it fliesoff. There is no engagement or pressure on the bearing part of the shaft or armature and notwithstanding the power exerted and applied as stated no injury occurs to either the gear or the armature parts.

What I claim is: y l. A gear remover, comprising a notched plate, -a set of ibeveled grappling membersl having headed ends loosely engaged within the notches of said plate,'a.s1ip ring engaging' the Xbeveled portions of said grappling members, and a screw extending centrally throu h the plate.

2. device for removing a gear from a shaft, comprising a notched plate, a series of grappling hooks having T- shanks loosely 'connected with said plate, a locking ring encircling said grappling hooks, and a screw 'i extending centrally through said plate.

3. A device for-removing a gear from a shaft, comprisinga set of grappling members, a slip ring surrounding said members, a mounting for said members having a central angular projection to hold it from turning, and a screw extending through said `projection and having means adapted to effect rotation thereof.

4. A device for removing a gear from a shaft, consisting of a round plate-having notches in its edge and a Wrench-engaging extension at one side, a set of grappling 5 members seated having T-shaped Shanks loosely seated Within said notches, a band about said plate and members andmean's. to secure said band removably in place, and a screw extending centrally through said 10 plate.

5.,A device for removing a gear from a shaft, complising' a plate having an angular extensionk adapted to receive a Wrench, a screw extending through said plate having aAvrench engagingend, a set of grappling 15 hooks anda movable band adapted to hold the same loosely connected with said plate, and a locking ring encircling said members.

Signed at Cleveland, in the county of Cuyahoga, and State of Ohio, this '14th-day 20 of December, 1918. i CHRISTIAN REINKER.

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