US2183582A - Elevator gate and latch - Google Patents

Description

Dec. 19, 1939. T. PATIN ELEVATOR GATE AND LATCH Original Filed July 19, 1923 2 Sheets-Sheet 1 Fly. 3

Fly. 1

Dec. 19, 1939. pA-nN 2,183,582

ELEVATOR GATE AND LATCH Original Filed Jul 19, 1925 2 Sheets-Sheet 2 Fly. 5

Triwa'dew Pail Patented Dec. 19, 1939 ELEVATOR GATE AND LATCH Thaddeus Patin, Anaheim, Calif., assi nor to Byron Jackson 530., a corporation of Delaware Refiled for abandoned application No.

652,600, July 19, 22, 1838, Serial 8 Claims.

This invention relates to an elevator for oil well casing, pipe and the like having a hinged gate or door and means to lock the gate in closed position. In elevators or" the character described, it is common practice to provide the body with a hinged gate whereby the body may be placed about the work and the gate closed and locked in closed position. This invention appertains particularly to the latching and locking means. It is the primary object thereof to provide a gate structure which will automatically lock on being closed and will be maintained securely in locked position while supporting the work. Lo addition to the broader objects of this invention, there are certain details of design whereby a simple, strong, and durable structure is obtained.

These objects together with other objects and corresponding accomplishments are obtained by means of the embodiment of my invention illustrated in the accompanying drawings, in which:

Fig. 1 is an elevation of a complete elevator constructed in accordance with my invention; Fig. 2 is a section as seen on the l ne 2-2 of Fig. 1 showing the gate in closed position; Fig. 3 is an enlarged fragmentary section as seen on the .line 3-3 of Fig. 2; Fig. 4 is an enlarged fragmentary section as seen on the line 4-4 of Fig. 2; Fig. 5 is a section similar to Fig. 2 showing the gate in slightly open position; Fig. 6 is a view similar to Fig. 4 showing the latch just closing; and Fig. 7 is a View similar to Figs. 4 and 6 showing the latch opening.

Referring more particularly to the drawings, an elevator is shown having links permanently attached thereto. However, a construction with detachable links may be used if desired, the means of attaching the links forming no part of the present invention. The body of the elevator is indicated by ID, and it is provided with ears II and !2 to which the links 63 may be attached in any suitable manner. The body has lugs 5 extending from one side thereof which are provided with openings to receive a hinge pin i Formed in the body of the elevator adjacent to the lugs M are keeper recesses 15 and H to receive projections formed on the gate later described. At the opposite sides of the body are keeper recesses l8 and E9 to receive corresponding projections on the gate. Formed in the body between the recesses I8 and I8 is a recess 2a to receive a latch pin for locking the gate in its closed position.

A gate 2| is provided with lugs 22 having openings for receiving the hinge pin IS. The lugs 22 application March are so spaced with reference to the lugs l4 that the gate may be moved upwardly and downwardly on the hinge pin. Formed on the gate adjacent the lugs are bevelled projections 23 and 2d engage in the keeper recesses 16 and respectively. At the opposite edge of the gate are projections 2.5 and 25 to engage with keeper recesses i8 and 19 respectively. As the gate is svmng from the open position shown in dotted lines in Fig. 5 to the closed position shown in full lines, the bevelled faces of the projections engage the keepers and ride upwardly moving the gate upwardly to the position shown in Figs. 6 and '7. Finally th gate by reason of its weight moves downwardly so that the projections and keepers in the position shown in Figs. 1, 2, 3, and 4. The weigh of a collar or pipe resting upon the elevator will hold the gate in closed position. However, the elevator may be moved downwardly, and to avoid trouble due to the gate opening a latch is provided. Mounted upon the gate are ears 2'! between which is pivoted a latch 28 of angular form. The latch has a pin 29 disposed to enter an opening in the gate 2i and when the opening is in registration with the recess 20 to move into the recess as shown in Fig. 4, thereby locking the gate against upward and disengagposition of the projections and keepers. A zinger 39 is so disposed that it may engage the top of the body. A handle 3! is provided so that the latch may be operated.

Assume that the gate is closed and in the position shown in Figs. 1, 2, 3, and 4. When it is desired to open the gate, handle 3| is grasped and pulled upwardly. Pin 29 is thus moved out of the opening, finger 39 engaging the top of the body and assisting in lifting the gate into the position shown in Fig. 7, in which position the projections and keepers are disengaged. The pull outwardly upon the gate will swing the latter into the position shown in dotted lines in Fig. 5. To lock the gate the latter is swung or slammed into closed position.

This application is refiled for my abandoned application Serial No. 652,600, filed July 19, 1923.

I claim:

1. An elevator comprising a body, a gate hinged thereto so as to permit limited axial movement, a bevelled projection on said gate, said body being provided with a keeper for said projection, said projection being so shaped as to be disengageab only upon upward movement of said te. gate and body being provided with open ings registering when the gate is closed, and a pin pivotally mounted on said gate and disposed to enter said openings and lock said gate when closed against upward opening movement.

2. An elevator comprising a body, a gate hinged thereto so as to permit limited axial movement, bevelled projections on both jambs of said gate, said body being provided with keepers for said projections, said keepers and projections being so shaped as to be disengageable only upon upward movement of said gate, said gate and body being provided with openings registering when the gate is closed, and a pin pivotally mounted on said gate and disposed to enter said openings and lock said gate when closed against upward opening movement.

3. An elevator comprising a body, a gate hinged thereto so as to permit limited axial movement, a bevelled projection on said gate, said body being provided with a keeper for said projection, said gate and body being provided with openings registering when the gate is closed, and a latch pin pivotally mounted on the upper part of said gate and disposed to enter said openings and lock said gate when closed against upward unlatching movement, said latch pin having a finger overhanging said body whereby on withdrawing said latch pin from said openings the latch pin acts as a lever to raise said gate.

4. An elevator comprising a body, a gate hinged thereto so as to permit limited axial movement, bevelled projections on both jambs of said gate, said body being provided with keepers for said projections, said gate and body being provided with openings registering when the gate is closed, and a latch pin pivotally mounted on the upper part of said gate and disposed to enter said openings and lock said gate when closed against upward unlatching movement, said latch pin having a finger overhanging said body whereby on withdrawing said latch pin from said openings the latch pin acts as a lever to raise said gate.

5. An elevator comprising a pair of jaws connected for relative horizontal swinging movement and for relative vertical movement, interengaging means on the jaws for locking the latter against relative horizontal movement, said means being disengaged by relative vertical movement between the jaws, latch means for locking said jaws against relative vertical movement, and common manually operable means on one of said jaws for releasing said latch means and thereafter moving one of said jaws vertically to release said interengaging means.

6. In a device of the class described, a pair of pipe-engaging jaws, means connecting the jaws for relative pivotal movement and for relative movement in a plane including the pivotal axis, means for preventing relative pivotal movement between said jaws comprising a recess in one jaw and a lug on the other jaw engageable with said recess and releasable therefrom upon relative movement in the aforesaid plane, a latch for preventing said last-mentioned movement, and a single manually operable means for releasing said latch and thereafter moving one of said jaws in the aforesaid plane to release said lug from said recess and permit relative pivotal movement between said jaws.

7. A well tool comprising a pair of jaws adapted to be closed about a vertical pipe, means connecting the jaws for horizontal opening and closing movement and for relative vertical movement, interlocking means on said jaws for preventing opening movement thereof and releasable upon relative vertical movement between said jaws, a latch mounted on one of said jaws and engaging means on the other jaw for preventing said vertical movement, and means associated with said latch and operable on initial movement thereof to release said latch and operable on continued movement thereof to move one of said jaws vertically to release said interlocking means and permit said jaws to open.

8. A well tool comprising a pair of pipe-engaging jaws connected together for relative movement both horizontally and vertically, interengaging means on the jaws for locking the latter against relative horizontal movement and being releasable upon relative vertical movement, a latch on one jaw engageable with means on the other jaw for preventing relative vertical movement, cam means on one jaw engageable with a surface on the other jaw for efiecting relative vertical movement between the jaws, and common manually operable means associated with said latch and said cam for first releasing said latch and thereafter operating said cam to release said interengaging means and permit said jaws to open.

THADDEUS PATIN.

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