US1037282A - Guide for elevator cars or cages. - Google Patents

Description

0. 1). MoGLURE. GUIDE FOR ELEVATOR CARS 0R GAGES.

APPLICATION FILED JAN. 12, 1911.

1,037,282, 7 Patented Sept. 3, 1912.

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M m l/mim M- L 7 COLUMBIA PLANCIGRAI'H CO..WASH1NGTON, D. c. i

ORA D. MCCLURE, OF IS'I-IPEMING, MICHIGAN.

GUIDE FOR ELEVATOR CARS OR GAGES.

Specification of Letters Patent.

Patented Sept. 3, 1912.

Application filed January 12, 1911. Serial No. 602,215.

To all whom it may concern:

Be it known that I, ORA D. MoCLURE, a citizen of the United States, residing at Ishpeming, in the county of Marquette, State of Michigan, have invented certain new and useful Improvements in Guides for Elevator Cars or Cages, of which I do declare the following to be a full, clear, and exact description, reference being had to the accompanying drawing, forming part of this specification.

My invention, while susceptible of more general application, is designed more particularly to provide an improved guide for the elevator cars or cages of mine shafts. These guides, as heretofore commonly constructed, are formed of wood and the tops of the cars or cages are ordinarily provided with safety dogs which, in event of the breaking of the hoisting ropes, are intended to engage the sides of the guides and thus check the fall of the cars or cages. In practice, it is found, however, that when the wooden guides have become worn and greasy, there is danger of the dogs failing to promptly grip the guides and arrest the descent of the cars or cages.

My invent-ion provides an improved construction of guide by which the objections incident to the wooden guides are successfully overcome.

The invention consists in the features of novelty hereinafter described, illustrated in the accompanying drawing and particularly pointed out in the claims at the end of this specification.

Figure 1 is a view showing in front elevation my improved guide, this view showing also an end portion of part of the elevator cage arranged in position upon the guide. Fig. 2 is a View in side elevation of the parts illustrated in Fig. 1. Fig. 3 is a view in side elevation of my improved guide. Fig. 4 is a view in front elevation of my guide.

In the accompanying drawing, A designates the central portion of the upper part of one side of an elevator cage across which, in the usual manner, will extend the shafts B that carry at their outer ends the safety or emergency dogs C. The shafts B will be provided with the usual spring mechanism for causing the dogs to engage the sides of the elevator guides D in event of the breakage of the hoisting cable, but as this mechanism forms no part of my present invention, I have not deemed it necessary to illustrate it in the drawing. Each side of the elevator cage will be provided at top and bottom with the usual or suitable shoes E adapted to em brace the sides of the guides D. These shoes, however, form no part ofthe present invention and need not be more particularly described.

My improved guide D is formed of a series of hollow sections that are united together, end to end, suitable expansion joints being provided at intervals to allow for the expansion and contraction of the guide, as will presently more fully appear. In the preferred embodiment of my invention, the guide sections are composed of metal plates bent to form depressions d and shoulders 03 adapted to engage the safety or emergency dogs C, in event the dogs are thrown inward by their spring mechanism (not shown) incident to a breakage of the hoisting cable. The bent plates forming the guide sections will be set back to back and their depressed portions will be riveted together as at (Z The parallel sides 05 of the guide sections will fit within the side flanges of the elevator guide shoe E and, when the ends of the guide sections are secured together, their edges will be in alinement and afiord a simple bearing surface for the face of the guide shoe E. By thus forming the guide sections, an exceedingly strong guide is provided, over which the elevator guide shoes will easily travel and the depressions d and shoulders d will form a most effective means for engagement with the safety or emergency dogs C, in the event of a breakage of the hoisting cable. The guide sections, when set together, end to end, will be connected by suitable plates F riveted thereto and lapping the joints of the sections, but, in order to allow for the expansion and contraction of the guide, I prefer to employ the improved construction of expansion joint next to be described. This expansion joint consists of parts, such as castings G, set within the adjoining ends of certain of the guide sections, the parts G being preferably formed with flanges g which enable the parts to be riveted to the walls of the guide sections. A coupling bolt or bar I-I extends between the parts G of adjoining guide sections and holds these parts in alinement while permitting the expansion and contraction of the sections. Preferably, each of the parts G of the expansion joint is provided with holes therein through which the headed bolt or bar H passes, the lower end of the bolt or bar H being preferably provided with a cotter pin it to guard against its displacement.

The guide D will be attached to cross beams or timbers K of the shaft, preferably by means of angle plates M that are riveted to the side walls (Z of the guide sections and to the beams K of the shaft.

My invention provides an exceedingly simple, durable and effective construction of guide. In event of the breakage of the hoisting cable, the safety or emergency dogs C must with certainty engage the oppositely disposed shoulders d of the guide, thereby insuring the stoppage of the car.

It is obvious that the details of construction above set out may be varied without departing from the spirit of my invention, and that features of the invention may be employed without its adoption as an entirety.

Having thus described my invention, what I claim as new, and desire to secure by Let ters Patent, is

1. An elevator guide formed of parallel metal plates united together in ofiset relation and forming shoe engaging surfaces at opposite sides of the guide, one at least of said plates being bent to form depressions and shoulders at intervals in the shoe engaging surface of the guide, said depressions and shoulders being arranged to receive an emergency dog.

2. An elevator guide comprising parallel metal plates bent at intervals to form a series of oppositely disposed, transverse depressed portions and shoulders adapted to receive emergency dogs, said plates being secured together back to back.

3. An elevator guide comprising connected sections each formed of parallel metal plates united together in offset relation and forming shoe engaging surfaces at opposite sides of the guide, one at least of said plates having depressed portions d, shoulders d and intermediate plain portions (Z said depressed portions and shoulders being arranged to receive an emergency dog and said plain portions forming the shoe engaging surface of the guide.

4. A guide for elevators comprising metal sections arranged end to end, metal plates located within said sections. and whereby, said sections are connected, the sides of said sections being bent to form shoulders to engage emergency dogs.

5. A gulde for elevators comprising metal sections united together end to end and eX- pansion joints connecting certain of said sections, said joints having parts within said sections and a bolt or bar extending between said parts and forming a slip joint I with one at least of said parts.

6. A guide for elevators formed of parallel metal plates united together, one at least of said plates having depressions and shoulders and angle bars extending between the plates and united thereto and whereby they are connected to the beams of the shaft;

7. An elevator guide comprising parallel metal plates bent at intervals to form in wardly ofiset, abutting depressed portions,

said depressed portions being united and forming shoulders adapted to be engaged byemergency dogs.

8. An elevator guide comprising parallel metal plates forming shoe engaging surfaces 3 at opposite sides of the guide, one at least of said plates being bent at intervals to form inwardly oifset depressed portions that abut against and are secured to the other plate,

said depressed portions forming shoulders adapted to be engaged by an emergency dog.

ORA D. McCLURE. Witnesses CHARLES HAWLEY, CHARLES G. Boone.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, I). G.

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