US1745560A - Wrench - Google Patents

Description

Feb. 4, 1930.`r

A. B. sElLHEl'Mg-:R

WRENCH Filel April 28, 1928 2 Sheets-Sheet 1 Feb. 4, 1930. A. AB. sElLHl-:IMER 1,745,560

v WRENCH Filed April 28. 1928 2 Sheets-Sheet 2 ob' 5 the provision of a wrench as characterize Patented Feb. 4, 1930 .ALLEN B. SEILHEIIIER, 0F TIFFIN, OHIO WRENCH Application mea April as, 192s.4 serial No. 273,574.

Myinvention relates to improvements in wrenches for use in replacing or removing threaded nuts from bolts in highly restricte locations,-and has for its primary ect which is especially for applying the nuts and lock washers employed in connection with the transmission bands of planetary gear transmissions, such as are used in some classes of motor vehicles.

when the nut A further object -is to provide a wrenchhavin means for holding a nut seated there# in and manually or automaticall operated means for releasing said nut hol in means vhas -been well starte on its bolt.

More specilically, itis an object of the invention to provide in a wrench, as characterized, novel means for holding a nut (or a nut and lock washer) against loss while starting the same upon a threaded shank. y

A still further ob] ect of the invention is to provide in a 'gear driven wrench a nut-loss preventing 'device and latch means therefor adapted to engage and lock thegear train when the nut-loss preventing device is in in'- operative position.

I The invention-also resides incertain novell .features of construction, combination, and mode of ,operation of the various arts to be hereinafter described and claime bei-ng1 .had to the accompanying 'drawings whic illustrate what now appears to be a preferred embodiment of the invention. It

1s to lie-understood, however, that the invention is susceptible of considerable change and modification over the embodiment shown and described without departing from the spirit and scope of the subject matter claimed hereinafter. p v In the drawings wherein the same reference characters have been used tov designate the same parts throughout,

Figure 1 is ar bottom plan view of a wrench incorporating my invention;

Figure .2 is a perspective view; A

Figure' 3 is a section on the line v3"-3v of vFigurel; Figurefl is a group perspective'view showreference ingv the nut and washer removed and their confining slide in inoperative position; A

Figure 5 is a cross section on the line 5-'5 of F1gure 4; l Y

Figure 6 is a section on the line 6-6 of 55 Fi ure 4, and y igure 7 is a perspective view showing the nreleasing -latch for the slide do Referring specificallyto the rawings the body of the wrench com ,rises a pair of elon`- gated'metal plate mem rs 1, 2 which are connected in spacedr relationship by two orsv more rivets 3 at longitudinally spaced medial points. A handle 4 is secured at one end of the body 1, 2 by rivets or other fastening 05 elements 5, as shown.

Between plates 1, 2 is disposed the gear train comprlsing the relativel large'thumb actuated gear 6 adjacent hand e 4 and which is journalled on one of the rivets 3; adja- 70 cent gears 7, 8 journalled Yin plate recesses as shown; a fourth ear 9 journalled on one f the rivets 3 and w ich latter gear 9 meshes with the peripheral teeth 10 of the nut re-x ceiving socket member 11. It is proper to mention at this point that 1plates 1, 2 adjacent their ends remote from andle'4l are bent laterally on a bias, as in-v dicated by dotted line`12 in Figure 2, to define a head l, 2a. In other words the head, 80 formed b laterally bent ends l, 2* of the bod 1,2, 'es in a plane disposed at an oblique ang e to the plane of `body 1, 2 whether the.

latter'be viewed edgewise or facewise.` The t relative arrangement of head'1,2 and body 85 1, 2, thus, enables the wrench to be used=or rather manipulated from a point above and laterally of the bolt,-as for instance from the central part'of the openin of a transmission gear case,-it being un erstood that l the bolt end is off to one side of said-case.`

Plate 1 has its head portion 1a thickened, as indiclated in Figure 3, it being noted that head prtion' '1* is provided with a hole 1b which acts as a bearing-to receive the enlarged circular upper portion 11* of the socket 11.l The socket vmember 11 is supported upon vthe head portion 2 o f plate 2, said head ortion 2 having a hole 2b concentric with t e hole 1b and which is adapted to receive the reduced lower sleeve portion 11b. of the socket I member 11 below the gear teeth 10. It is to be understood, of course, that the socket member 11 will be located in place with the other members of the gear train before the plates 1, 2 are secured together by the rivets 3.

The 4socket member 11 has a hexagonal re- A cess for the reception of nut 15 and the bottom of the socket member 11 is provided with a bolt 'passage hole, as indicated.l

The plate 1 has its outer face provided with longitudinal uides 17 for guiding the locking slide 18 W lose bifurcated end 18a engages the washer 19 on either side of the bolt hole for confining said washer and the subjacent nut in place against loss.

disengage The slide 18 has an ear 20 at its rear end which is apertured for engagement by a spring 21the other end of which is secured in an apertured ear 22 of a locking dog 23 which is pivoted to plate 1, as at 24.l The dog 23 is adapted to engage in notch 18b of slide 18 to hold the same against retractionf Spring 21 has a dual function in that it tends to cause dog 23 to bear against the edge of slide 18 and further in that'it tends to maintain slide 18 in operative position to hold the nut-15 and washer 19 in placein socket member 11.

` The other end of dog 23 has a laterally bent U-shaped 'portion 25 which, when the dog is from notch 18h, is adapted to be actuated between the plates 1, 2 to engage betweenv teeth of gear 8 to lock the train against -movement until such a time as the slide is moved back to operative position. It is understood that' the engagement of the lug kend of dog 23 with the edge of slide 18 will holdportion- 25 in gear-locking position. When operating this wrench within a planetary 'transmission case it is practically impossible to tell when the nut is well started on its bolt. Therefore,-as a Asafeguard to prevent manipulation of slide for disengagement of the wrench from the nut until the latter is well started on. the bolt,-I provide end 33 in the position of Figure 3. The op.- Y posite end of wire lever 31 is laterally bent as at 34 so that when part 33 is in a position in the path of the bolt 38 as in.` Fi ure 3 the part 34 will lie ,beneath'the notche forward edge 25 of the gear`locking dog part 25 to prevent'depression of dog 25 to free it frona the notch 18*A of slide 18. However, when the end of the bolt engages the end 33 of wire wrench will doubtless be readily understood and appreciated by those skilled inthe art. The wrench is relatively inexpensive in construction and may be operated with one hand leaving the other free to perform .other duties. For instance when operating upon transmission bands the free hand can be used to control the pedal and shaftofthe particular thermore it will be plain that the washer 19 can be slid onto the bolt, the wrench applied to the endof the bolt with the nut therein and the slide 18v drawn back,-the release of 'nsV the slide gathering vor engaging thefwasher and seating it against the nut. The thickened portion 1a of plate 1,-that is to say at the head of the wrench,-provides ample Vdepth to house the washer 19 in contact with the inner endof the nut.

Inasmuch as it is possible to lock the gear.

-train by means of dog -23 the wrench can be used as an ordinary rigid Ynon-geared wrench, for. instancewhen it is desired to .tighten a nut considerably or vloosen one which has become very tight. Furthermore a wrench as characterized herein will elfectually prevent a nut or a .washer from drop ing into the transmission with the incident'lbss of time 'in retrieving. Having thus described my invention, what I claim as new and desire to lsecure by Letters Patent is:

1.`A wrench ofthe classv described comprising a body, a nut receiving socket member, said body having a confining bearing in which said nut receiving socket member is journalled, said socket member having peripheral gear teeth, (gearing carried by said body and having a riving connection with the gear teeth of said socket member, a slide member carried by said body and having one los end adapted to engage a nut in said socket member to hold the same in place, a latching dog pivoted-to said body and having. a lug at one end, said slide having a notch with a which said lug 4is adapted to be engaged to hold said slide in operative position, and a spring secured to said dog to hold it in engagement"with said s lide, andv said spring being also attachedl to said slide to hold lthe same yieldably in operativeposition, and the other endlof said dog having a portion actuated to engage and lock said gear'train when the dog is swung to disengage its lug `from said notch.i y l 2. l Ina wrench .of the class' described h-aving ja 'socket head, said socket head being* adapted to receive aq 'nut from. one 'end'of 80 drum upon which work is being done. Fur- `said socket, the other end of said socket having a hole, movable nut-confinin means a's- -so'ciated with` said head, a latch or said last named means, and bolt-operated latch-releasing means alined with said sock-et hole.

3. v In a wrench having a nutengaging portion and a nut confining means associated therewith, the combination of a bolt-operated releasing means for said confining means.

4. The combination set forth vin claim 1,- and a lever carried by said body and having laterally `bent end portions, one of said end portions, normally engaging said dog to prevent actuation thereof to release said slide,

and the other of said end portions lying adjacent said head and in the path of the bolt to be operated thereby when the nut has reached a predetermined point thereon so as to swing said lever to release said dog from the first-mentioned laterally bent end portion.

5. Awrench of the class described comprising a body provided with a'nut-receiving socket, a locking slide carried by said body and having a portion adapted to overlie said socket member to confine a nut therein, latching means for holding said slide in operative position, said latching means comprisin a dog pivoted to said body and having a ug, said slide having a notch adapted to receive said lug, and a yieldable connection between when the nut has assumed a said locking dog and said slide whereby to cause the dog to bear against the slide andto normally retain the slide in a position to confine a nut in said socket member.

6. A wrench of the class described com'- prising a body having a nut receiving socket portion, said socket ort-ion lyingin a plane obliquely and lateral y disposed with respect to the face and side edge planes of said body',

means for confining a nut in said socket member and movable to and from operatlve positiony means for latching said confining means in nut holding position, and yielding means connected to said confining and latching means and tending to hold both of the same in their operative positions.

7. A wrench of the class described comprising a body provided with a nut-receiving socket, a locking slide carried by said body and having a portion adapted to overlie said socket member to confine a nut therein, latching means for holding said slide in operative position, and bolt-operated releasing means for said slide-latching means and .operable position on the bolt.

8. In a gea-red wrench having a rotatable I i nut-supporting head and geared driving means therefor,-a movable member for holding the nut in the head, latching means for said nut holding member, and gear locking means carried by said latching means and operable to locklthe gears against turning when the nut holding member is released.`

predetermined 9. The combination set forth in claim 8;

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