US501051A - Lifting device - Google Patents

Description

(No Model.) 2 Sheets-Sheet 1.

W. BLANO.

LIPTING DEVICE.

No. 501,051. Patented July 11, 1893.

-.(Ro'Mode1.) ESheets-Shet 2'.

W. BLANG. LIPTING DEVIUE.

No. 501,051, Patented July 11,189

wue'nifoz (now, I

NITED STATES PATENT OFFICE.

LIFTING DEVICE.

SPECIFICATION forming part of Letters Patent No. 501,051, dated July 11, 1893. Application filed February 21, 1893. Serial No. 463,162- (No model.)

To all whom it may concern.-

Be it known that 1, WILLIAM BLANO, residing at Camden, in the county of Camden and State of New Jersey, have invented certain newand useful Improvements in Lifting Devices; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to an improvement in lifting devices, the object of the invention being to p'roduceasimple and efficient device to facilitate the use of a crow bar or lifting lever.

A further object is to construct a lifting device in such manner as to support orproduce the fulcrum of a crow bar or lifting lever, so as to relieve the strain upon the operator.

A further object is to so construct a device for supporting or producing the fulcrum of a crow bar or lifting lever, that said device canbe accommodated to the position and weight or size of the object to be lifted.

With these objects in view the invention consists in certain novel features of construction and combinations and arrangements of parts as hereinafter set forth and pointed out in the claims.

In the accompanying drawings: Figure 1 is an elevation partly in section. Fig. 2 is an elevation at right angles to Fig. 1, partly in section. Fig. 3 is a section on the line 00-00 of Fig. 1. Fig. 4 is a view of a modification.

A represents a base having an annular V- 4 shaped groove a, and laterally projecting legs or supports 1). Located on the base A, is a base plate B, provided with an annular V- shaped rib or flange 0 adapted to enter and have a free movement in the V-shaped groove a. An integral arm or bolt cl projects downwardly from the base plate B and loosely through an opening d in the base A,-said arm or bolt being provided at its free end with screw-threads for the reception of a nut or nuts 01 From this construction and arrangement of parts it will be seen that a swivel connection is produced between the base A and base plate B. Projecting upwardly from the base plate B, is a standard C, comprising upright members e, e, preferably made integral with the base plateB and connected at their upper ends by means of an integral cross bar 6. Each upright or member 6 is made on its inner face with a groove or way f, in which a block or carriage D is adapted to have a vertical movement. Inside the block or carriage D, are two curved seats g, g, on which an oscillatory shoe E having curved bearing faces h, is located. Alug or ear '5 projects downwardly from the shoe E and enters between the seats g, g,said lug or ear being provided with an elongated slot or openingj for the accommodation of a pivot pin 70, which latter also passes through perforations made in the seats g, g.

In order to add strength to the members of the standard they are made with external ribs j, and at intervals said members or uprights are made with bosses is having perforations (preferably square), for the accommodation of a bolt F, which passes through aligned openings in the respective members or uprights of the standard and serves to support or block the carriage D, and the devices carried. From this construction and arrangement of parts it will be seen that the carriage D and the devices carried thereby can be adj usted at any desired height.

The crow bar or lifting lever, by means of which an object is to be lifted, is placed on the shoe E, which forms a fulcrum for it, and the standard being swiveled on the base A, can be readily turned to suit the object to be lifted.

By the employment of the device above described the crow bar or lifting lever can be easily and quickly adjusted to suit the position and weight of the object to be lifted and the operator will be relieved of much strain which he would otherwise be subjected to. Chain Z is attached. to one of the supports or legs I), and is intended to be connected with the crow bar or lever to retain it in position when the object being lifted is elevated.

In Fig. 4 is shown the device adapted for light work,-the construction being the same as above described, except that the shoe E is not made adjustable vertically, and but one laterally projecting leg bis provided. In this form of the invention the carriage D is dispensed with and the seats g, g made to project from the base plate B, as shown in dotted lines. The carriage being dispensed with, the perforated bosses on the members of the standard are also dispensed with.

The device is very simple in construction,

easy to manipulate and is efiectual in the performance of its functions.

Various slight changes might be made in the details of construction of the device with out departing from the spirit of my invention or limiting its scope and hence I do not wish to limit myself to the precise details of construction herein set forth, but,

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a lifting jack, the combination with a pair of upright members, of an oscillatory shoe operating between the uprights and adapted to receive and support a lifting lever thereon substantially as set forth.

2. In a lifting jack, the combination with a pair of uprights, and a base to which they are swiveled, of an oscillatory shoe operating between the uprights, substantially as set forth.

3. In a lifting jack, the combination with suitable support, of a carriage capable of being slid up and down, means for blocking the carriage, and a shoe pivoted to the carriage, substantially as set forth.

4. In a lifting device, the combination with a base having an annular V-shaped groove, of a base plate, an annular flange or rib projecting from said base plate and adapted to enter said annular groove, an arm or pin projecting from said base plate and through i a perforation in the base, a standard projecting from said base plate and a shoe carried by said standard, substantially as set forth.

5. In a lifting device, the combination with a standard comprising two members or uprights having grooves or ways, of a carriage adapted to have a vertical movement in said ways, a bolt for supporting said carriage, and a shoe carried by said carriage, substantially as set forth. 7

6. In a lifting device, the combination with a standard, comprising two parallel members or uprights having grooves or ways, of a carriage adapted to have a vertical movement in said grooves or ways, a bolt for supporting said carriage, curved seats on said carriage, a shoe havingacurved bearing on said curved seats, a lug having an elongated opening projecting from said shoe and between said curved seats, and a pin passing through perforations in said seats and the elongated slot in the ear or lug projecting from the shoe, substantially as set forth.

7. Ina lifting device, the combination with a standard comprising two parallel members, ribs on said members, perforated bosses also on said members, of a carriage, a bolt adapted to pass through said perforated bosses and support the carriage, and an oscillatory shoe carried by said carriage, substantially as set forth.

In testimony whereof I have signed this specification in the presence of two subscribing witnesses.

WILLIAM BLANC.

\Vitnesses:

A. W. NASH, Jr., ALBERT F. BROWN.

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