US852138A - Pipe-lifter. - Google Patents

Description

PATBNTED APR. 30, 1907.

L. REIDEL.

PIPE LIFTER.

APPLICATION FILED Mn gs. 190B.

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ATTORNEYS THE NORPIS PETERS cm. WASHINGTON, 0.1;.

No. 852,138. 'PATENTBD APR. 30, 1907.

. L. REIDEL.

PIPE LIFTER.

APPLICATION FILED MAY 25, 1906.

2 SHEETS-SHEET 2.

WITNESSE8+- 4 ll Iggma (16665 add MM By W W aw? 1! ATTORNEYS LOUIS REIDEL, OF TAMPICO, ILLINOIS.

PIPE-LIFTER.

Specification of Letters Patent.

Patented April 30, 1907.

Application filed May 25, 1906- Serial No 318,717.

To all whom [it may concern:

Be it known that I, LoUIs REIDEL, residing at Tampico, in the county of Whiteside and State of Illinois, have invented a new and Improved Pipe-Lifter, of which the following is a specification.

This invention seeks to provide a simple, inexpensive and easily manipulated means for lifting heavy pipes and other like objects and it comprehends essentially a lever or jack member, a pair of flexible hangers, a pair of pipe gripping cams or eccentrics loosely mounted on the hangers and means for connecting the two gripping cams or eccentrics whereby to cause them to operate as opposing members for engaging and gripping the pipe at diametrically opposite sides and to firmly clamp the said pipe and elevate it as the lever or jack member is depressed.

This invention also consists in a pair of oppositely disposed independent clamping or gripping members for engaging the opposite sides of the pipe to be raised when it is pulled upward and to sustain the said pipe when hung at their pendent position, and a supplemental means for gripping and holding the pipe during the time the lifting clamps or gripping members are shifted to take a new hold.

In its more subordinate features, my invention consists in certain details of construction and novel arrangement of parts, all of which will be hereinafter fully explained, pointed out in the appended claims and illustrated in the accompanying drawings, in which Figure 1, is a perspective view of the invention illustrating a preferred arrangement thereof when provided for lifting tubing, the clamping aws being positioned to grip the pipe. Fig. 2, is a transverse section of the same. Fig. 3, is a similar view which shows the upper or supplemental claws positioned to sustain the pipe as the lower or lifting jaws are adjusted to be moved down for a new grip on the pipe. Fig. 4, is a horizontal section of n improvement taken on the line 4 4 of Fig. 2. Fig. 5, is a similar view taken on the line 5-5 on Fig. 3. Fig. 6, is a detail perspective view of the jack or lifting lever, the flexible hangers secured thereto and the opposing gripping jaws loosely on standards 22, which standards may rest on a base member 3, as shown, or they may be otherwise sustained. The support 1 has a longitudinal opening 1 for the passage of the pipe or other heavy object to be lifted. The opening 1 registers with a recess in the outer end of a bifurcated casting 6 which is mounted upon the support 1 and at the opposite edges of its recess it has a pair of oppositely disposed apertured lugs 77 which form bearings for the stud bolts SS upon which the lifting or jack lever 9 is fulcrumed.

The lever 9 has a forwardly extending bifurcated head whose recess or crotch 91 is sufficiently wide to permit the head straddling the pipe or other heavy object to be lifted and to each fork 92 of the head is pivotally secured one end 10 of a pair of flexible steel hangers 11l1 to the lower end of each of which is connected a gripper jaw or cam 1212 of peculiar construction, of which the manner of j oining them to the hangers and the means for their connection with each other, forms the essential features of my invention.

The gripper members 12 are disposed transversely with respect to the jack lever 9 and have their cam faces opposing each other as clearly shown in Fig. 2, by reference to which it will be noticed that each member 12 consists of a solid body having an outwardly projecting stem 12 provided with a staple 12 to receive the lower ends of the hangers 11 and the inner or gripping edges of the said members 12 are concaved to fit around the pipe or other heavy body to be resting while the other ends of said members are curved downwardly and outwardly to form cam surfaces 12.

The two gripping members 12 are mounted between and are joined by the parallel link bars 13*13, the ends of which are pivotally connected to the said members by the fulcrum bolts 14 that pass through such members near their outer ends, and the cam surfaces 12 are eccentric to the said fulcrum bolts whereby when the jack lever is raised, the said members 12 will slip down freelyover the sides of the pipe to be moved to a position for making a new hold, or when the said jack lever is forced down, the said members 12 will firmly grip the pipe under a powerful leverage force to permit of conveniently and with ease raising the said pipe.

It wi ll be noticed by referring to Fig. 1 that by reason of fulcruming the jack lever in the manner shown and described, that the fulcrum of the said lever and the connection of the hangers 11 and grippers 12 are not in vertical alinement when the jack lever is raised. By reason of such arrangement of parts the forked end of the lever straddles the pipe and thereby permits of adjusting the grippers 12 firmly against the pipe on the first portion of the down thrust of the lever before raising the pipe and for bringing the hangers substantially in the vertical alinement with the pi e when the lifting action begins, thus provi ing for obtaining the powerful maximum leverage action of the lever for raising the pipe, and making it possible for a single operator working the jack lever like a pump handle to lift a very heavy object.

15-15 designate a pair of gravity dropped dogs having concaved or cam like 0 posing faces for engaging the pipe. These ogs are pivotally connected to the bed plate at 15" and have such correlatlon with the weight of the pipe, causing them to automatically grip and clamp the said pipe, from dropping down between them during the time the gripping members 12 are slid down on the pipe or make another purchase thereon.

16 designates a link having an eye 16 secured to the bed plate and adapted to engage with the hook 17 on the jack lever for holding the said lever to its depressed position when desired.

By pivotally connecting the members 12 to the link arms 18 as shown, and loosely connecting them to the hangers as stated, the said members 12 will have a substantially universal motion whereby to cause 'them to .readily adapt themselves for gripping and releasing the gripper on the pipe as the jack lever is worked, it being understood the function of the members 12 is to lift the pipe under a powerful lever action since the pipe is held to its elevated position by the supplemental grippers or dogs 15.

By reason of the peculiar construction and arrangement of parts stated, very heavy pipes and the like can be easily and conveniently raised and the lifting mechanism be held entirely around the said pipe when it is moved to a position to make a new grip on the pipe which is securely held from accidental displacement and to its lifted position by the gripper dogs 15.

Having thus described my invention, what I claim and desire to secure by Letters Pat ent, is I j 1. A pipe rod gripping means, comprising a slotted support, a pair of oppositely disposed bearings located at the inner end of the slot, an actuating lever fulcrumed on the said bearings, said lever having a bifurcated end projected into the slot in the support, a flexible hanger pivotally hung from each member of the bifurcated end of the lever, a pair of oppositely disposed drop dogs or pawls pivotally mounted on the slotted support, and having gripping faces for engaging the pipe or rod, a gripping jaw loosely connected to the lower end of each of the flexible hanger members, said jaws having their cam faces oppositely disposed, and a pair of link members that pivotally connect with said jaws as set forth.

2. The combination with the slotted support, a jack lever having a bifurcated head fulcrumed on the said support and a pair of gravity dropped gripper dogs pivotally mounted on the support and projected above it, the said dogs being located in advance of the bifurcated head of the lever and disposed transversely thereof; of a pair of transversely disposed link members located below and in a vertical plane of the gravity dropped dogs, of a pair of opposing pipe clutch members eccentrically fulcrumed in the opposite ends of said link members, and flexible metallic hangers loosely connected at the lower ends of the clutch members and pivotally connected at the upper ends with the bifurcated ends of the jack lever.

3. The combination with a slotted support; a pair of oppositely and transversely disposed drop dogs or pawls pivotally mounted on the support, and having opposing gripping faces, a jack lever disposed at right angles to the drop dogs and fulcrumed on the support, in advance of the drop dogs or pawls, said. lever having a bifurcated head, that extends into the slot of the support, hangers pivotally suspended in the outer bifurcated ends of the lever head, a pipe clutching claw loosely hung on each hanger and held. to oppose each other, a pair ofparallel link members, bolts connecting the outer ends of said hanger members with the pipe clutches, said bolts forming the fulcrums for the clutch claws, the said pipe clutches having their front or gripping face eccentric to their fulcrums.

LOUIS REIDEL.

Witnesses:

W. T. W001), CARL LORENZEN.

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