US2226770A

US2226770A - Gib

Info

Publication number: US2226770A
Application number: US305206A
Authority: US
Inventors: Anker J Holter
Original assignee: Individual
Current assignee: Individual
Priority date: 1939-11-18
Filing date: 1939-11-18
Publication date: 1940-12-31
Anticipated expiration: 1957-12-31

Description

GIB

R E T L C H l A.

Filed Nov. 18, 1939 j? umllulwwm 41a Imm. H

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mlllmf.. Immun' l l INVE- ATTORNEY Patented Dec. 31, 1940 UNITED STATES PATENT OFT-TCE Claims.

The invention relates to gibs, particularly such as are used in conjunction With elevators as the guiding means to maintain the proper position' of the cage with relation to a rail. The object 5 of the present invention is to overcome` certain defects in existing gibs for the stated purpose and to provide an improved instrumentality which will perform its work more satisfactorily and for longer periods of time.

At the present time it is customary to construct gibs for elevators in the form of a trough made of wood, Bakelite, hard rubber, malakite, or bre. Such gibs are supported and held by a shoe .on the elevator and, when new, closely t l5 the rail along which the elevator moves. As soon as wear sets in it is apparent that the elevator will have more play room, not only in a forward and back direction, but also from side to side, which results in bumps and in uneven progress and in further wear. When the wear becomes sufliciently large, the gib must be replaced.

According to my invention the gib is so constructed that it will t the rail accurately notwithstanding wear and which need not be replaced, but requires only replacement of the wearing surfaces, which to that end are removably associated with a carrier.

The invention is illustrated in the accompanying drawing in which Fig. 1 is a front face View of the carrier portion of the gib; Fig. 2 is a central longitudinal section of Fig. 1; Fig. 3 is a face view of the three wearing units; Fig. 4 is a section of Fig. 3 on line 4 4; Fig. 5 is a front face view of the completely assembled gib constituted of the parts shown in Figs. 1-4; Fig. 6 is an enlarged cross-section on line 6-6 of Fig. 5; and Fig. 7 is an enlarged cross-section on line 'I-'I of Fig. 5 with the parts in the positions occupied by them when the gib is associated with 40 its guide rails.

In the drawing,Fi'gs. 6 and 7 show the carrier constructed of three parts, I, 2, and 3, held together by screws 4. Any suitable material can be used for this carrier such as malakite, wood,

iibre, etc. Two sets of such screws 4 are indicated in Fig. 1, but a third set as indicated in Figs. 2 and 7 may be used near the central portion of the length of the carrier trough.

As indicated in Fig. 7, leaf springs 5, 6, and l,

also shown in Fig. 1, are centrally attached to each of the parts I, 2, and 3 by rivets 8. The ends of the springs 5, 6, and 'I are free and are biased toward the center of the gib. Plates of cast metal babbitt 9, I0, and II are then inserted in the carrier trough I, 2, 3, and due to the pressure of the springs will occupy a position thereon such as shown in Fig. 6. Each of the metal elements 9,r I0, and II have stepped contours indicated atIZ, I3, and' I4 adapted to establish the relativeposition of the parts shown in 5 Fig. 6 and the relative position of the parts when associated with the elevator guide rail I5 shown in Fig. 7. Each of the castings 9, III, and II'are provided with a central counter sink 'I6 adapted to accommodate the heads of the rivets 8 which ILO extend into thev inner portion of the trough formed by the parts I, 2, and 3. The position of the spring 6 with respect to the carrier is xed by virtue of rivet 8, and hence the spring cannot get out of position. Although the castings 1.5 9, IU, and II are not secured to the carrier, they are prevented from being longitudinally displaced because the heads of the rivets are seated in the countersinks I6. Thus each rivet 8 holds both its spring and casting in correct 20 position with respect to the carrier, and the casting can be renewed without longitudinally displacing the spring.

The ends of the castings I0 and II and of the trough sections 2 and 3 are cut away at I'I as 25 indicated in Figs. 1, 2, 3, and 5 to provide means by which the gib is held in position on the shoe I8 of the elevator. The means for forming this connection are well known and therefore not described. At the ends of the metal parts 9, I 0, 30 and II some of the material is removed, as indicated at I9, to provide in the assembled condition of the device, an entrance point for lubricants.

As more clearly indicated in Figs. 1 and 2, the 35 parts I, 2, and 3 of the carrier trough are recessed orrabbeted at 20 to accommodate the springs 5, 6, and l, respectively, when the parts are in the position shown in Fig. 7.

It will be readily observed from Fig. 7 that 40 when any wear occurs in the metal portions 9, I0, or II, the springs 5, S, 'I will preserve a constant position of the plates 9, II), and Il with relation to the rail I5, until the Igap between the edges of the three plates is completely closed, 45 at which time the babbitt plates should be removed and new plates substituted therefor. 'Ihe loss of metal due to wear is relatively insignicant and the material of the worn-out plates can be used for casting new plates. The replace- '50 ment of Worn plates by new plates isa matter of extreme simplicity since they merely have to be laid in their intended positions without requiring any mechanical or tool work. 'I'hroughout the use of the new gib the elevator Will be 55 snugly associated with the guiding rail at all times and will be protected against undue swaying or bumping due to increase (resulting from wear) in the space between the rail and the guiding surfaces with which the rail comes into contact. Typical dimensions for a gib of the character described are for a 1/2 inch rail, a width and height of 11/2 inches with respect to the trough shown in Figs. 6 and '7 and a length of 8% inches. AThe individual sections I, 2, and 3 of the trough have a thickness of 1A, inch. The metal bearing plates 9, Ill, and I I have lthe same length and thickness as the sections of the trough, the u plates Ill and II, however, having a width of ll/gpA inches, while the inner plate 9 has a width of le@ of an inch. The springs 5, 6, 1 are preferably made cf steel having dimensions sucht` as x 61/4 x 15" in the case of'Y the elements I0, II, and about 1/2 X 61/2 X gli" for the endV plate 9. There are no projecting parts in the gib and its actionV in use. is that of a positive bearing gripV which, notwithstanding wear, still keeps its `bearing surface and constantly bears on the rail and is quiet in its action.

Although the new gib hasbeen described with particular reference to itsusein connection with anelevator guide rail, it is capable of being used and Vof functioning in connection with other moving bodies which require a gibto control a relative constancy of position as between the gib and the part with which* itis in sliding engagement.

I claim:

l. A guide shoe comprising a gib carrier, a leaf spring, a rivet securing the central portion of 4saidspring to said carrier, said rivet having a head projecting into the interior of said carrier, and a gib having a countersink mounted within said carrier with said countersink engaging said rivet head.

2. A guide shoe comprising a gib carrier, a leaf spring, means securing said spring Within said carrier with the longitudinal length of said spring in approximate parallelism with said carrier, a gib mounted in said carrier and bearing against said spring, and means upon said gib cooperating with said spring securing means for preventing the longitudinal displacement of 4said gib in said carrier.

3. A guide shoe comprising a gib carrier, a

mspring, single means securing said spring to said icarrier, a gib mounted in said carrier and bearing against said spring, and means upon said gib cooperating with said single spring securing means for preventing the longitudinal displacement in either direction of said gib in said carrier.

4. A guide shoe comprising a gib carrier, a leaf spring, a fastening element securing said leaf spring to the inner wall of said carrier, a gib mounted in said carrier and bearing against said spring, and said element engaging said gib to prevent longitudinal displacement of said gib in said carrier. i

5. A guide shoe comprising a gib carrier, a leaf spring, means for securing the approximate center portion of said spring to said carrier, a

gib having. a ybore therein and mounted within said carrier, and said means engaging said bore for preventing longitudinal displacement of said gib in said carrier.

ANKER J, HOLTER.