US2915105A

US2915105A - Pinion straightening device

Info

Publication number: US2915105A
Application number: US580111A
Authority: US
Inventors: Walczak Walter
Original assignee: Individual
Current assignee: Individual
Priority date: 1956-04-23
Filing date: 1956-04-23
Publication date: 1959-12-01
Anticipated expiration: 1976-12-01

Description

Dec. l, 1959 w. wALczAK 2,915,105

PINIoN STRAIGHTENING DEVICE Filed April 2s, 195e TTORNEVS United States vrPatent My invention relates to new and useful improvements in devices for straightening pinions, particularly pinions of watches, clocks and the like, the principal object and essence of my invention being to provide a device -of the character herewithin described which is adapted to receive the pinion, to support same perfectly horizontally with relation to the anvils, and to provide clamping means to clamp the pinion between the anvils thereby straightening same in a plane perpendicular to the pinion pin.

A further object of my invention is to provide a device of the character herewithin described which includes levelling means both on the pinion carrying jig and the device thereby enabling the operator to ensure that the pinion is held horizontally and that the anvils also are horizontal.

Surmounting the cylindrical main Ybody portion 5 is a plate 9 parallel with the base plate. 4 and having, in

this embodiment, three anvils 10 extending outwardly therefrom. The aforementioned cylindrical body portion 5 is apertured centrally as 'at 11 and is provided with a sleeve 12 bearably slidable therein, it being noticed that the upper end 13 of the sleeve yextends above the plane of the upper surface14 of the plate 9.

The head piece 2 consists of a central hub 15 recessed centrally as at 16 upon the under surface thereof, lit being noticed that the head piece is receivable by the recess 16 upon the extending portion 13 of the sleeve so that the' extending portion 13 supports the head piece 2 being rigidly attached thereto. l

Upper anvils 17 extend outwardly from the central hub 15 of the head piece and correspond to the aforementioned anvils 10 there being three of such pairs of anvils in the present embodiment. i

A clamping post 18 surmounted by a knurled knob 19 is freely engageable within an aperture` 20 formed in the hub 15 and is rotatable Within this aperture but is re-A stricted against` `downward movement therein by means of fixed washery 21v being` secured :to the post 18 and engaging the upper surface 22 of the hub 15.

This post 18 extends downwardly through the sleeve 12 and is screw-threaded at the lower end 23 thereof.

` The base 24 of the cylindical body portion 5 is apertured Yet another object of myinvention is to provide a I device of the character herewithin described which contains a plurality of anvils adapted to receive pinions of diierent sizes.

A still further object of my invention is to provide a device of the character herewithin described which is extremely e'icient in operation, and which furthermore permits an operator to straighten pinions rapidly and accurately. v

Yet another object of my invention is to provide a device of the character herewithin described which is simple in construction, economical in manufacture, and otherwise well suited to the purpose for which it is designed.

With the foregoing objects in view, and such other objects and advantages as will become apparent to those skilled in the art to which this invention relates as this speciiication proceeds, my invention consists essentially n=the arrangement and construction of parts all as hereinafter more particularly described, reference being had to the accompanying drawings in which: `Figure 1 is a side elevation of my device.

i vFigure 2 is a side elevation of myl device ta'ken'at right angles to Figure l and sectioned in part.

Figure 3 is a top plan view of Figure '1.

Figure 4 is a front elevation of the jig and pinion per se.

In the drawings like characters of reference indicate corresponding parts in the different figures.

Proceeding now to describe my invention in detail, it will be seen upon reference to the accompanying drawings that it consists primarily of a base collectively designated 1, a head piece collectively designated 2, and a jig collectively designated 3.

Specifically, the base 1 consists of a substantially triangular base plate 4 having a substantially cylindrical body portion 5 extending upwardly from the centre thereof. Levelling screws 6 screw-threadably engageable within the corners 7 of the triangular base plate, terminate in surface engaging feet 8 and permit adjustment of the base, the purpose of which will hereinafter be described.

centrally andv screw-threaded to receive this threaded end 23 as clearly illustrated in Figure 2.

A spring 25 surrounds the post A18 and reacts between the base of aperture 11 yand the underside of the recess 16 thus normally ,urging the head piece upwardly when the clamping post is unreserved. j l In'order to preventrotation of the head piece and also yto limit the upward movement thereof and to pre# vent displacement of the head piece from the sleeve K12, I provide a Vknurled bo1t26 extendingthrough' plate 9 and being free to rotate therein and being screw-thread#l ably engageable within the head-piece as clearly illustrated in Figure 2 and it will be'appreciated that rotation ofthis bolt 26 controls thespacing between the pairs of anvils and prevents4 the Vaforementioned displacement.

The aforementionedI jig 3 lconsis'tsfof, anupper stem 27 and a lower stem 28 between which'is formed an open centered main body portion 29. A pinion carrying pin 30 extends 'downwardly within the portion 29 Ifrornthe stern 27 and avfurther pin 31' extends upwardly from the stem 28, it being `observed that the pin 31 isy attached to a screw 32 screw-threadably engageable within the stem 28. 'Ihese pins are adapted to hold a pinion 33 therebetween as clearly illustrated, it being understood that the points 34 are adapted to `enter the aperture within the pinion normally receiving the pinion pin. Finally,

screwit will be noticed that a conventional bubble level 35 sur vmounts the stern 21. t vIn operation, 'the pinion to be straightened is held between the pins`of `the jig as illustrated inA Figure" .4 whereupon the jig is slid over a convenient pair of arl'vils which are apertured or slotted as at 36 to receive the

pins

30 and 31 so that the pinion 33 is situated between the anvils as clearly illustrated in Figure 2. 'I'he different anvils 10 are provided with slots with which to take pinions of varying sizes'.

A further conventional bubble level 36 is secured to an extension of plate 9 thus enabling the operator, via the levelling screws 6, .to ensure that the plate 9 is completely horizontal, and also -to ensure that the pinion 33 being held between the anvils is also horizontal, this latter being checked by the bubble level 35 on the jig.

The clamping post 18 is then rotated so that the head piece 2 is moved downwardly towards the plate 9 thus causing the pinion to be clamped between the

anvils

10 and 17, continued pressure causing same to be straightened and aligned in a plane at 'right angles to perpendicular axis thereof, the engagement of sleeve 13 within the base of aperture 11 ensuring that the surfaces of the. plate 9 and Vthe 'lieadjpieteZy remain parallel.

After theclamping post has been tightened sufliciently to straighten the pinion, same maybe released, spring ZS-u'rfge's the headpiece upwardly to the limits defined by -the position of the adjusting bolt l26 whereupon the jib may be removed and the pinion pivot post replaced.

Since various modileati'ons can be made in my invention as hereinabove described, and Ymany apparently widely different embodiments of saine made within Ythe spirit and scope of the claims without departing from such spirit and scope, it is intended 'that all matter contained in 'the accompanying specilcati'on shall be interpreted as illustrative only and not in a limiting sense.

What Iclairn as my invention is:

1. A device for straightening pnions and the like'comprising in combination a base, a fixed anvil on said base, a movable head piece situated for vertical movement above said base and supported therebY, an anvil plate on said head piece superjacent to said xed anvil, means associated with said anvils for supporting a pinion therebetween, and means zo-operating between said head piece and said base adapted to move said head piece towards and away from said base,'said means for supporting said pinion between said anvils including said anvils being slotted at 'the outer ends thereof, and a yjig for supporting said pinion, said jig comprising an upper stem and a lower stem, an open-centred main body portion between said stems, pinion carrying pins extending from 'each of said stems within said open-centred main body portions, one of said pins being adjustable lengthwise, said pins adapted to be received by said slots.

2. The device according to claim l in which said base is apertured vertically, guide means extending above said base within said aperture, said head piece being recessed and affixed to said guide means.

3. The device' according to claim 2 in which said means 'co-operating between said head piece and said base includes a clamping post freely rotatable within said head piece, said clamping post extending downwardly within 'said aperture within said base, said clamping post being screw-threaded Vat the lower end thereof and being screw-threadably engageable within `a corresponding screw-threaded aperture at the base of tirst-mentioned aperture.

4. The device according to claim 3 which includes spring means surrounding said clamping post and reacting between said base and said head piece.

5. The device according to claim l in which said base includes a base plate, levelling screws on said base plate and a main body portion extending upwardly from said base plate,y a plate surmounting said main body portion, and a plurality of anvils formed on said plate, said movable `head piece also including Va correspondinggplurality of anvils formed thereon each one superjacent one of said tiret-mentioned anvils on said plate, and means to l'restrain vertical movement of said head piece within limits.

6. The device according to claim 1 which includes a levelling indicator on said jig.

7. The device according to claim 1 which includes a levelling indicator on said base.

8. 'The device according to claim 6 which includes also a levelling indicator on said base.

9. The device according to claim 2 in which said base includes a base plate, levelling screws on said base plate and a main body portion extending upwardly from said base plate, a plate surmounting said main body portion, and a plurality of anvils formed on said plate, said movable head piece also including a corresponding plurality of anvils formed thereon each one superjacent one of said inst-mentioned anvils on said plate, and means to restrain vertical movement of said head piece within limits.

l0. The device according to claim 3 in which said base includes a base plate, levelling screws on said base plate and a "main body portion extending upwardly from said base plate, a plate surm'ounting said main body portion, and a plurality of anvils formed on said plate, said movablehead piece also including a corresponding plurality of anvils formed thereon each one superjacent one of said first-mentioned anvils on said plate, and means to restrain vertical movement of said head piece Within limits.

ll. The device according to claim 2 in which said means for supporting said pinion between said anvils includes said anvils being slotted at the outer ends thereof, and a jig for supporting said pinion, said jig comprising an upper stem and a lower stem, an open-centred j main body portion between said stems, pinion carrying pins extending from each of said stems Within said opencentred main body portions, one or said pins being adjus'table lengthwise, said pins adapted to be received by said slots.

12. The 'device according to claim 3 in which said means for supporting said pinion between said anvils includes said anvils being slotted Vat the outer ends thereof, and a jig for supporting said pinion, said jig comprising an upper stern anda lower stem, an open-'centred main body portion between `said stems, pinion carrying pins extending from each of said stems said opencentred main lbody portions, one of said pins being adjustable lengthwise, said pins adapted to be received by said slots.

References Cited in the le of this patent UNITED STATES PATENTS ne. 7,343 Barnes oct. 1o, 1876 149,173 Wheeler Mar. 31, 1874 i 159,115 Parker Ian. '26, 1875 499,418 Duff June 13, 1893 631,991 lames et al. Aug. 29, 1899 1,003,132 Buckingham Sept. 12, 1911 1,017,801 Rice Feb. 20, 1912 2,261,246 Fried Nov. 4,A 1941