US 1245400 A
Description (OCR text may contain errors)
J. K. TOMLINSON.
v JACK. Y
APPLICATION FILED FEB- 6. 1917.
Patented Nov. 6,1917
-'Ronceverte, in the county ofGreenbrier "ployed, primarily, but not necessarily; for; raising automobiles and other vehicles.
nn STATES PATET OFFER JOHN. KXTOMLINS ON, OF RONGEV'ERTE, WESTzVIRGINIA,
Specification of Letters Patent. f .Pa1; 3nte 1N 6 .1 917,
Application file'd February 6,1917% Seiia1N03146j957.
To all whom it may concern-.-
'=Be it known that I; J OHN K. ToML Nsom" a citizen of the UnitedStates;residing at boss 8. The inner side of the brace-7 isprovided w-ith projections 9.
"- Mountedtoreciprocate in thestandard 3 is a rack bar l0 havingia head'- llsha'ped as and State of Vest Virginia, have invented a desired, to receive the object which is to be new and useful J ack, of which thefollowlifted; On its inner side, "the rack bar l'O'has ing is aspecification. teeth 12. A screw 1% is threaded-through The device formin'gthe subject matter of -the lower end ofthe rac'kbar 1O betw'eenthe thisapplication is a jackadapted to be'em-'lowermost-teeth thereof. The purpose: of 'the'aperture 6 is to permit' the insertion of the screw l la'vhen the-rack barl 'dhas been One object of the present= invention is to--lowered=until it'rests' on-theb'ase 2. provide novel means whereby a vertical re- The numeral 15 denotesa shaft which-may "ci-procatory movement is imparted to the 'be bolt including a -head llii-the' endf'ace rack bar whereon-the vehicle or other object 17 of'which is vertically disposed. Thesli-aft rests immediately. 15 is arranged at'right angles toth'e brace 7, Another object of-the invention is to pro the brace 7 being inclined as aforesaidFThe vide novelmeans whereby the pawl which*-shaft'=15-includes areduced' end18'passing actuates the driving w'heel; may be shifted. through 'the'boss S-andjfo-rming shoulder present invention appertains.
It is-w'ithin-the province ofthe disclosure".
which will appear as the description proceeds, the invention resides in the combina-- in the precise embodiment of-the invention an opening 4: at its front side, and in the l9which abuts againstthe inner face of'the to improve generally and toz-enhance the brace 7.- A nut'20 is threaded onto the part utility ofdevices of that type to which thel8 o f the shaft' l5 and bearsagainst the outer end of the boss 8', the shbnl'der 19=engaging the inner faceof the brace 7.
Journaled on the shaft .l5an'd locate'd inside of-the brace-7 is a wheel 22. The wheel 22 is provided witha spiral-rib 23, operating through the opening t and coac'tin'g' ivit'hthe teeth 12 of the-rack bar ,10', the end ofthe rib 23bei1rg beveled a s' sho'wni at 2al, and the t'eeth12 of the rack bar'being 'be eled laterally, as shownat 25; so thatthe endsofthe "rib 23 may 1 cooperate readily with 'theiteth when the wheel 22 isrotated. 'Tl1e wheel-22 is peripherally providedwith ratchet teeth 26. The nume ral 27 denotes a lever, the inner end 21 of which is mounted to swing on the shaft '15. The lever 27"has an integrally formed side socket 28 provided with opposed slots 29 in its ends. The lever 27 carries a pivot element 30 on which is mounted to swing a double-ended pawl 31 provided with a flange 32, one end of which overlaps the inner face of the wheel 22. with the other end of the flange 32 is a helical spring 33 carrying an arm 34 terminating in a transverse finger 35.
One end of a handle 36 is inserted removably into the socket 28. The inner end of the handle 36 is beveled as shown at 37 to coiiperate with the finger of the spring 33. The handle 36 carries a laterally projecting pin 38 adapted to be received in either of the slots 29. In the side face of the Vith the above and other objects in view tion-and arrangement of parts and in the details of constructionhereinafter'described and claimed, it being understood that changes 1 herein disclosed can be made within the scope of what is claimed, withoutdepartingfromthe-spirit of the invention.
In the accompanying drawings Figure 1 shows in sid'eelcvat'ion, a jack constructed in accordance witlt the present invention, parts being broken away;
Fig. 2 is "a vertical section of the j'ack'em-' boclying the present invention, parts being" broken away;
Fig. 3 is a cross section on the line 3-3 of Fig. 2; and
Fig. 4 is a frag'rnental longitudinal section taken through the actuating lever and attendant parts.
In carrying out the present invention there is provided a support denoted generally by the numeral 1 and including av base 2 and a standard 3. The standard 3 has back of the standard 3, vertically spaced apertures 5 and 6 are formed. The upper part of the standard 3 is connected with the base 2 by means of an inclined brace 7 which may be a channel member, thefianges of the channel member being connected by a seated and retained, a bowed spring 40.
Connected handle 36 there is a recess 39 in which is In practical operation, when the handle 36 is moved vertically, the lever 27 is t lted on the shaft 15. One end or the other of the pawl 31, engaging with the notches or teeth 26 in the wheel 22, secures a rotation of the wheel, and the spiral rib 23, cooperating with the teeth 12 of the rack bar 11, brings about a raising or a lowering of the rack bar, depending upon the direction in which the wheel 22 is rotated.
The beveled end 37 of the handle 36 is adapted to engage either above or below the finger 35 on the spring 33, and in this way, the pawl 31 may be tilted, so that the respective ends, at the will of the operator, will coact with the ratchet teeth 26 of the wheel 22, to secure a rotation of the wheel in one direction or in an opposite direction. TVhen the handle 36 is reversed or rotated on its axis, and advanced into thesocket 28, the pin 38, coacting with one of the slots 29, prevents a further rotation of the handle 36 .and holds the beveled end 37 in such a position that it will coact with the finger 35 of the spring 83. The spring 33 holds the working end of the pawl 31 in operative relation to the peripheral teeth 26 of the wheel 22. The spring 40, coacting with the socket 28, serves to hold the handle 36 removably in the socket. The aperture 5 in the standard 3 permits the shaft 15 to be mounted in place. The projections 9 serve as a support for the wheel 22 and prevent an undue lateral movement thereof in an outward direction. The brace 7 and the wheel '22 are inclined with respect to the vertical, to the end that the spiral rib 23 may coact with the teeth 12, at the upper portion of the spiral only, it being obvious that the device cannot be operated satisfactorily with both the upper and lower portions of the rib 23 engaged simultaneously with the teeth 12 of the rack bar. After the rack bar 10 has been raised until the lower end of the rack bar is above the lower edge of the opening 4:, there naeaeoe is no lateral support for the lower end of the rack bar 10, on the side adjacent the wheel 22, aside from the fact that the inclined end face 17 of the head 16 of the shaft 15 exercises this important function. hen the rack bar 10 has been raised to the limit, then the inner end of the screw ll, acting as a stop cooperating with the rib 23, prevents a raising of the rack bar 10 to an undesirable extent.
Having thus described the invention, what is claimed is In a device of the class described, a onepiece support including a base, a tubular standard carried by the base, and an inclined brace extended between the upper portion of the standard and the base, the standard having an opening in its forward side; a rack bar mounted. to slide in the standard; a wheel having a spiral rib opcrating in the opening and engaging the rack bar; a shaft carried by the brace and supporting the wheel, the shaft being provided at its inner end with an enlar ed head coacting with the inner face of the wheel; and a stop mounted in the rack bar adjacent the lower end thereof and projecting between certain of the teeth of the rack bar to cooperate with the rib, the back of the standard having separate apertures through which the shaft and the stop maybe inserted respectively, the apertures respectively approximating closely in diameter the shaft and the stop, and being widely spaced apart longitudinally of the standard, whereby the back of the standard will present a maximum supporting area to the rear edge of the rack bar.
In testimony that I claim the foregoing as my own, I have hereto aiiixed my signature in the presence of two witnesses.
JOHN K. TOMLINSON.
Ivy E. Snrrsoiv, PHILOMENA A. RocKELLI.
Copies of this patent may be obtained for five cents each. by addressing the Commissioner of Patents, Washington, D. C,