US1320244A

US1320244A - George lane

Info

Publication number: US1320244A
Authority: US
Publication date: 1919-10-28
Anticipated expiration: 1936-10-28

Description

' 6. LANE.

LIFTING JACK.

APPLICATI ON FILED JULY II, 1918.

1 ,32Q24. Patented 001 3. 28, 1919.

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GEORGE LAN: E, OF POUGHKEEPSIE,-NEW YORK, ASSIG-NOR T LANE BROS. 00., OF POUGI-IKEEPSIE, NEW YORK, .63. JOINT STOCK ASSOCIATION OFF-NEW YORK.

marine-anon.

Patented Oct. 28, 1919.

Continuation of application Serial No. 114,426, filed August 11, 1916. This application filed July 11, 1918.

Serial No. 244,463.

To all whom it may concern:

Be it known that I, GEORGE LANE, a citizen of the United States, residing at Poughkeepsi'e, New York, have invented certain new and useful Improvements in Lifting- Jacks, of which the following is a specification, this application being a continuation of an application filed by me on the 11th day of August, 1916, Serial Number 114,426. My present inventionrelates to improvements'in lifting jacks adapted more especially for use in connection with motorvehicles, and is designed as. an improvement uponthe jack disclosed in LettersPatent No. 1,181,395, granted to me on the 2nd of May, 1916.

In devising the present invention I have aimed to simplify the construction by eliminating certain parts; to secure apositive motion of the contact pin or device in both directions by" the operator instead of a spring action one way; to eliminate the constant urging of the handle backward by the spring and the consequent tendency of its getting into an intermediate position, and further to provide a construction'which will compensate for commercial variations and render unnecessary alterations in, the jack.

A still further object is to provide a con struction in which interchangeable handle bars'may be used so as to effect the reversal of the jack by either a bodilyv shift of the handle bar in the socket member, or by the movement of a side rod carried by the handle bar as preferred by the customer.

. With these and other objects in view the invention includes the novel featuresof construction and arrangement and combination of parts hereinafter described, my said invention being defined by the appended claims.

An embodiment of the invention is illustrated in the accompanying drawing, in Which, I

Figure 1 is a sectional elevation of a suflicient portion of a jack to illustrate my invention.v i a I Fig. 2 is a detail view of a handle bar with side rod control.

F'g. 3. is an end view of the actuating shownin place in section.

Fig. 4 is a similar view with a shiftable v handle in place in the socket, and,

Fig. 5 is a view similar to Fig. 1 with the. shiftablehandle in place.

Referring by reference characters to these drawings, the standard 2, lifting bar 3 and lifting and retaining dogs 5 and l are shown as constructed and arranged to be operated as in my aforesaid patent, the lifting and retaining dogs being connected by the springs 13 and 14: with the bell crank levers 11 and 12 mounted alongside the actuating lever 6, and having their contact portions pressed toward each other by a common spring C.

Actuating lever 6 is provided with a socket to receive a handle bar of material length to enable the jack to be placed in position without crawling under the car, which handle is retained in the socket by a spring dog 19.

In Fig. 2 is shown a handle bar 7 provided with a longitudinally shiftable rod 8, guided in suitable eye 8 at the side of the handle bar andhaving an angularly turned end 8 projecting through an elongated slot in the hand lever and held therein by a washer and pin 8*, Fig. 2, or other suitable operated, and thus effect the lowering of the lifting bar. It will be understood that the contact pin, when the handle bar is in position, projects through a cut awayportion in the side of the actuating lever. Shifting of the rod to another position moves the end or contact. portion 8 beyond the range of said bell crank levers, as shown in dotted lines at b in Fig. 1, whereby the pawls 4 and 5 operateto effect the step by step raising of the lifting bar.

Instead of carrying the contactpiece on a separate rod slidably mounted on the handle bar, I may form said contact piece as a permanent or integral part thereof, as shown in Figs. 4. and 5 so that the reversal of the same spring pressed pin 19 but the handle bar is provided with two approximately V-shaped notches 18 and 18 so as to render it capable of a lengthwise movement in the socket to either of two positions determined by the engagement of the dog with one or the other of said notches as in my aforesaid patent, and provide said handle bar with a rigid pin or projection a, which in one position of the handle bar in the socket will strike the bell crank to effect the lowering, and in the other position will be out of the range of said bell cranks, the pin, when the handle is in position projecting through the cut-away portion 6 of the actuating lever.

The two opposed longitudinal grooves b" in the Walls of the socket enable either of the forms of handle above described to be used in the same jack according to the preference of the customer. 7 If desired the handle bar with rigid pin may be inserted in inverted position or with the pin on the left side so that the pin will be ineffective with respect to the bell cranks. This may be desirable in some instancewhere reversal of the jack is not desired. In such case the opposite edge of the handle bar would be provided with a notch to receive the dog 19" as indicated at 18.

From the foregoing description it will be apparent that I have produced a simpler and more durable form of jack, having eliminated the rocking member 21 of my previously patented construction and the spring for actuating the same, resulting also in corresponding reduction in cost of manu facture.

Furthermore the shifting of the contact piece is positive in both directions and not dependent on any spring action, whereby I avoid all danger of failure of the jack to reverse properly due to weakness of the spring which may arise from several causes, as for example, insuflicient initial strength, loss of force due to change of shape or drawing of temper under the heat used in enameling, or weakening under prolonged use. i

I also avoid in my present construction any danger of the handle coming to rest m an intermediate position as sometimes occurs where there is some play or looseness of parts due to inequalities in manufacture when the spring'in my patented construct1on referred to would urge the handle bar backward far enough to bring the pin or contact device into neutral or ineffective posltion.

Still another advantage of carrying the contact member on the handle bar is that I can select the handle bar best fitted for each particular jack and thus compensate for slight variations in manufacture which might otherwise require-alterations in the jacks or handle bars.

Having thus described my invention, What I claim is:

1. A jack comprising a standard, a lifting bar guided therein, lifting and retaming pawls, a lever pivoted. 1n the standard and provided with a socket for recelvmg an operating bar, devices movably supported from the standard for controll ng said pawls and a controller for said dev ces shiftable into and out of actuatmg position in reference thereto, said controller being carried independently of the lever, and acting directly upon the said devices when in actuating position, and an operatmg bar having an end adapted to be held within the socket in the lever.

2. A jack comprising a standard, a lifting bar, lifting and retaining pawls, a lever mounted in the standard having a socket ing bar, lifting and retaining pawls, a lever V mounted in the standard having a socket for receiving an operating bar, devices supported from the standard for controlling the operation of the pawls, a removable operating bar having an end adapted to be held in the socket in the lever and a controller carried directly by said end and movable with said operating bar into and out of actuating position in reference to said devices, said controller when in actuating position acting directly upon said devices.

i. A jack comprising a standard, a lifting bar guided therein, lifting and retaining pawls, a lever pivoted in the standard and provided with a socket for receiving an operating bar removably, said socket having centrally arranged opposed grooves in its side walls, devices movably mounted adjacent the lever for controlling said pawls, and a projection carried by the handle bar and slidable into either of said grooves on insertion of the handle bar, said pro ection when lying in one of the grooves serving as a controller for said devices and being shiftable into and out of actuating position in reference thereto. 5. A jack comprising a standard, a liftng bar guided therein, lifting and retaining pawls, a lever pivoted in the standard and provided with a socket for receiving an operating bar removably, said socket having and a projection carried by the handle bar and slidable into'either of said grooves on insertion f the handle bar, said projection when lying in one of the grooves serving as a controller for said devices and being shiftable into and out of actuatmg position in reference thereto, means for holding said handle bar in either oftWo determined positions when the. contact projection lies in one groove and means for holding it in a single position when inverted With the projection in the other groove.

6. A jack comprising a standard, a lifting bar, lifting and retaining pawls, a lever mounted in the standard having a socket for receiving an operating bar removably, devices mounted adjacent the lever for controlling the operation of the pawls, an o erating bar having an end adapted to e held in the socket in the lever, a lateral projection carriedby said end, the walls of said socket having grooves either of which is adapted to receive said projection, a

spring pressed beveled pawl carried by said lever and rojecting into the socket, one edge of said handle bar having a single pawl receiving notgh and the other a pair of notches.

7 A jack comprising a standard, a lifting bar, lifting and retaining pawls, a lever mounted in the standard having a socket for receiving an operating bar, devices supported from the standard for controlling the operation of the pawls, an operating bar having an end adapted to be held in the socket in the lever and a controller carried by said operatin bar, and moved by the movement of sai operating bar into and out of actuating position 1n reference to said devices, said controller when in actuating position acting directly upon said devices.

In testimony whereof, I affix my signa ture.

GEORGE LANE- Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G.