US 1391677 A
Description (OCR text may contain errors)
socxm WRENCH. APPLICATION FILVED MAILS, |921.
1,391,677. Patenasgpn 27,1921.
To all w hom it may concern Be itknown that I, FRED Foss, la citizen of the United States,residing atSpokane, in Spokane county and-State' of Washington, have invented certain new and useful Improvements Ain-"Socket-' Wrenches, of which the following is al specification.
My present invention `relates tov improve ments in socket wrenches 'of Athat type involving the 'use of interchangeable socket heads having ratchets thereon, and pivoted pawls on'the wrench handle or'drivingf deviceengagng the ratchethead in such manner thatV the direction Y' of rotation of the driven ratchet head'may-be reversed.
The primary object of the invention is theprovision of a tool specially applicable for use in removing the' rear' bolts which hold the "boXings for the connecting rod of the Ford type of automobiles,-but while designed for this specifiepurpose it will'ofv course be understood that there are numerous other uses in which the Vtool `is applicavble, and by the useof interchangeable socket heads the device is'readily vadaptedfor dif-V ferent sizes of bolts, Y
ByV the utilization of my yinvention'tlie socket head'rnayybe readily applied to the wrench, locked in position for use, andthe driving devices or clutch mechanism'quickiy applied tothe ratchet head `for driving in a selected direction, as will be hereinafterl n more fully pointed out and claimed.
In .the vaccor'np'anying drawings rI have illustrated one :complete example ofV 'the physical embodiment of my invention, show# ing also a pair .of detached heads, in which the parts are combined and arranged ac cording to the best mode I have thus far devised for the practical application of the principles of my invention, and which form has proven highly satisfactory in actual use.
Figure 1 is a side view of a wrench em-v bodying my invention showing the slide key for locking the head to the tool.
Fig. 2 is a longitudinal sectional view of part of the wrench disclosing the driving device comprising a pairof opposed pawls in engagement with the ratchet head.
Fig. 3 is an edge view of the wrench with head in operative position, showing in sec.
tion a portion of the pawl retaining device.V
Fig.v 4 is a perspective view showing one size of socket in -theratchet head, and Fig.
5 is a side yview of a ratchet head showing its locking boss, &c.
. Specification of Letters Patent.
' Patented Sept.` 27, 19121.
" Appi-ication fiied March 31, 192i. .serial No. 457,430'. f
In the preferred yform `of the invention Vas* shown in thedrawings I utilize a shank 1 preferably with an integral offset head com# prising a pair of spaced jaws 2 and 3 of,
different dimensions and shape, the former having an yopen, enlarged'end or Vring 4 in whichv theV ratchet head, indicated `byl the numeral 5 issupported. `As shown in' Figs. 4and 5 particularly the ratchet head is fashioned with a socket portion 6 of polygonalk form whichl may assume hexagonal `shape as in Fig. 4, a smooth annular face 7' to fit within the ring 4, andan annular series of ratchet teeth l8. At the end opposite the socket the head is providedwith a re-y duced extension or'boss 9 centrally located thereon'v and this boss is fashioned with an annularfexterior groove 10, near'its outer inserted through the open ring 4'of the jaw 2 andinto an opening 11 (dotted lines Fim` 3) of the jaw 3,V the smooth annular face 7 fitting in the ring 4 and the boss fitting in' the opening11 of the jaw 3 in Order that the head be turned. in their` forked por-- tion of thewrench In this position the ratchet headis locked against displacement from the forked head by means of a slide tongue or plate 12, `which isof lmetal and rectangular in form having an open end slot 13 whose parallell wallsl lit in and co-act withythe groove 10 of theboss. At the op-v positeend ofthel slide plate a slot 14 is pro` vided and the locking thumb screw 15 is passed through Vthis slot 'and threaded into theforked Yhead toi clamp the'slideplate in' adjustedV position. vThus in Fig. 1 it will'be V apparent that ,by turningfthe screwl 15 to the left to loosen it, the slide plate'may be drawn or slid to the right to disengage the vparallelwalls of the slot 13 from the annular groove 10, whereupon the ratchet head may be withdrawn from the forked head. The slide plate it will ybe understood is merely a retaining or locking medium, and the ratchet head is supported in the forked head firmly and with stability by contact of theface of the head yadj acent the ratchet with the inner face of the jaw 3, and by the ring 4.
The driving device, or element clutching the shank and ratchet head together, includes a pair of pivoted pawls 16 and 17 lo-` cated in the space between the jaws 2 and 3 yof the forked head, with their working ends engaging, or adapted to engage the ratchet In assembling the parts, the boss is teeth 8 of the ratchet head. A double leaf spring 18 is supported in the forked head,
by a transverse pin 19, with its ends restrained under the non-working ends'of -the pawls, as best shown in Fig. 2, and these pawls may jointly engage the ratchet teeth 8 to hold the ratchet head for movement with the shank as it is turned in both directions.
Or one of the pawls may be disengaged from the ratchet head, as in Fig. 2, in order that thel head may be driven in one direction yand the shank turned in reversedirection free of Y the head. One ortheother of the pawls may be acted on for disengagement by a dog or cain arm 20 lon the pintle 21, which is passed through registering openings in thetwo jaws 2and3, and also through a slot 22 in the slide c plate, which slot permits-'adjustment ofthe plate, The dogv has a wedge face23 to en-.V
gage'in a-complementary .groove 24 in the inner face ofthe jaw2 of the forkedhead, and as this groove extends across the face at,
both lsides of the pintle 21, it will be api i parent that the pintle may be turned through an arc of 180 degrees, to engage the wedge face 23 of theV dog in either portion of this groove. The pintle has a spring 25 retained on its free end, and the spring is located in a recess 26 provided therefor in the outer face of the jaw 2, a cap 27 being provided as a shield for the end of the pintle and its spring. The pintle'has a head 2S, preferably knurled, `and lit will readily belapparent from the structure of Fig. 3 that the head may be grasped,
the pintleshifted slightly, longitudinally to disengagethe wedge faced dog from its l groove againsty the tensioncf` the'spring 25,
and, then thevpintle and dog turned as desired. If thevdog isturned to neutral position outl of contact with both pawls 16 and 17, Vthen both pawls will engage the ratchet head, holding it rigid with the shank. Or the dog may be turned to position of Fig. 2 to'free the pawl 17 Vfrom theratchet head, leaving the pawl 16 to coperate with the ratchet head. By turning the dog to opposit-'e position, the pawl 16 is disengaged and the pawlV 17 isbrought into engagementv handled conveniently and the proper power applied for performinggits required functions.
what I claim asnew and desire yto secure by LettersY Patent isi. The Combination Wah a shank ma asforked head, of a ratchet head in said forked head and ay driving device yfor the ratchet head, said ratchet head havingA a boss provided with an annular groove, and a slotted slide plate on one ofv the forks of said head engaging said grooved boss to prevent displacement of the ratchet head; l
2. The combination with a shank having spaced jaws one of which is formed with an open ring and another with ay reduced opening, of a ratchet head havingasmooth por-Y tion in said ring and a projecting boss inV said reduced/opening, and a` slotted slide plate on one ofcsaid jaws adapted to engage an annular groove onVV the exterior of said boss, for the purpose described;V I Y v- 3. The combination with a shank having spaced jaws, of a-ratchet head retained Having thus fully described my'invention,
therein, a p air of pawls pivoted between the jaws, a springv normallyV holding both pawls in engagement with said ratchet head, a rotatable pintle having adog for selectively engaging the pawls to .render'thenif inopcrative, and a wedge face on said dog adapted to engagea groove in oneof the spaced jaws to hold said dog adjusted position.
In testimony whereofI laffix my signature.