US390560A - Hoisting and conveying machine - Google Patents

Description

(No Model.) 2 Sheets-Sheet 1.

A. E. BROWN.

HOISTING AND CONVEYING MAGHINE. No. 390,560. Patented 0 2, 1888.

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A. E. BROWN.

HOISTING AND CONVEYING MACHINE.

N0. 390,560. Patented Oct. 2, 1888.

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SPECIFICATION forming part of Letters Patent No. 390,560, dated October 2, 1888.

Application filed March 15, 1887. Serial No. 231,?21. (No model.)

T 0 all whom, it may concern.-

Be it known that I, ALEXANDER E. BROWN, of Cleveland, in the county of Ouyahoga and State of Ohio, have invented certain new and useful Improvements in Hoisting and Convey ing Machines; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, making part of this.

application.

Myinvention relates to certain new and use ful improvements in hoisting and conveying machines, some or all of which improvements, though specially adapted for use in an apparatus designed for hoisting and conveying the material in digging ditches for sewers, &c., may be used in connection with hoisting and conveying apparatus for other purposes.

The machine or apparatus made the suhj ect of this application belongs to that well-known type in which there is a carriage that travels upon some sort of elevated tramway or track, the said carriage being moved in both directions by an endless cable, and in which there is also another cable, generally designated as the hoist-rope, that is secured to a fixture at one end and has its other end wound upon the usual drum of the hoistingengine located in the engine-house of the structure.

My present invention consists in certain novel features of structure in this type of machine, which features will be hereinafter more fully explained, and will be most particularly pointed out and defined in the claims of this specification.

To enable those skilled in the art to which my invention relates to make and use the same, I will now proceed to more fully describe the several features of my improvement, referring by letters of reference to the accompanying drawings, which form part of this specification, and in which I have shown my invention carried out in that form which is the best known to me, and in which I have so far successfully practiced it. e

In the drawings, Figure l is a perspective view of an elevated single-track tramway and the appliances thereof, such as I have already praetically used (in the hoisting and conveying or" material in the construction of sewers) and embracing the several features of my present invention. Fig. 2 is a View showing detached or separately, but mounted on the tramway, one of the traveling carriages or machine and the load -sustaining sheaveblock in side View or elevation. Fig. 3 is an end or edge view of the parts shown at Fig. 2. Fig. at is a reverse side View of ma chine shown at Fig. 2. Fig. 51s a sectional detail.

hoist-rope y in the customary manner, and which also carries, in the usual manner, a sheave or pulley, over which travels the endless cable E, to which are propcrlyseeured at any desired intervals the carriages or ma chines F, and of course at the opposite end of the tramway (although not shown in the drawings) are the usual engines and drums and their connections, by means of which the end less carriagc'driving cable is caused to travel in the desired manner, and by which also the hoist-rope is taken up and let out, in a manner well known, for the purpose of hoisting and lowering the buckets or. tubs I, which are connected in the usual manner with the depending hook of the sheaveblock J. These sheave-blocks are constructed substantially according to the most approved plan, but have combined with them and the machine or carriage suitable rubber or other elastic cushions, 0, arranged as shown, so that whenever the sheave-block is elevated or pulled up (to engage with the detaining devices of the machine) said block will cushion at its top edge against the elastic stops 0, thus preventingthe usual jar and consequent sudden strain or shock upon the parts of the apparatus experienced in the use of machines as made previous to my invention.

The elastic stop or cushion O, I have made in the form of a short rubber tube, which I age, to which is attached the fixed end of the have simply applied to the shaft or arbor e of the depending load-hook (I, said rubber tube having a bore equal to the size of the arbor e and an external circumference sufficient, as seen by the dotted circle at Figs. 2 and 4, to

leave the requisite space between the lowercurely held in place between the metallic plates of the machine or trolley F at the proper locality to act as a bumper for the sheaveblock J whenever the latter may be suddenly run up slightly above the point necessary to seat it in the load-sustaining hooks d.

d d are the sustaining-hooks,a pair of which is supplied to each of the carriages or machines, the said hooks being arranged at either side of the machine and being secured at their upper ends to a stud or spindle, c, which re- U volves in a suitable bearing-box near the upper part of the machine, and having their lower ends made hook-shaped, and adapted to pass beneath and support the laterally-projecting ends of the sheave-spindle or sheaveblock hubs t at certain times, when it may be desired to traverse the load carrying machines without undue or material friction or strain upon the hoist-rope, which latter, of course, always passes partially around the two U rope-wheels W of the carriage and the sheave (shown by dotted circle at Fig. 2) of the sheaveblock J Each of the carriages is provided, as shown, with clamping devices f,which are adapted at their upper parts to grip the traversing rope or cable E, for the purpose of fastening each of the said carriages to said traversing cable at any point at which it may be desired to makethc connection,for the purpose ofcausing the said carriage (and its depending bucket) to traverse through any desired portion of the length of the entire run of the conveyingmachines. By the use of these clampingjaws f, (which are pivoted at 1 and provided with securing-bolts at 2,) or by other suitable means for thus securing the carriages F to the traversing rope E at any desired point, I am enabled in the use of the apparatus to give any one or more of the machines a limited run back and forth over any specified portion of the excavation or work where alone it may be desired to operate the buckets. This is of advantage in doing certain kinds of work, especially in the digging of sewer-ditches, 850.

Each of the carriages is provided, as shown, with antifriction safety-rollers i t, which are arranged in the carriages so as to come slightly below the lower edge of the trackbeam B, and which serve in case of the presence of any obstruction on the track to prevent the track-wheels of the carriage from rising far enough to become derailed or thrown from the track. The carriages are also provided with safety or guard irons or hooks qq, arranged, as shown, to clear but hooking over the track to such an extent that the guardrollers will not allow the same to ever lift above the top of the rail. In case the flanges of the track-wheels break, the weight of the machine will be held by these safety-irons q dropping onto the rails, the hook ends thereof preventing the machine from swinging sidewise, thus preventing any possibility of the carriage falling from the track. These safetyrollers in conjunction with the safety or guard irons above the track, I consider of much importance in the practical running of the machine.

In a traveling carriage of the kind shown and described mounted to travel upon a single track, and being suspended from the trackwheels, as shown, so that the depending sides or portions of the carriage-frame F have to run in close proximity to one of the vertical sides of the track-beam B, it frequently happens that by the swaying of the load, or from other causes, such portions of the carriageframe are liable to come into contact with and rub against said vertical side of the trackbeam, thus causing undue friction with a commensurate waste of the power of the driving machinery and more or less injuriousjwear to the parts of the apparatus. To overcome this difficulty or objection in the type of machine shown, I have provided those portions of the carriage frame which are apt to come in con-- tact with the vertical side of the traclobeam with anti-friction rollers or wheels m, which are designed to ride against or roll on the vertical surface of the beam B whenever the depending carriage may be swayed toward the beam, and to avoid all rubbing between the parts, and thus prevent the usual undue wear thereof and all wastage of power.

The load-sustaining hooks (Z (Z may be arranged in an opposite manner with reference to any two adjacent carriages in the whole contrivance, as shown by the relative positions of the books at Figs. 2 and 4, so that,when desired, a pair of machines that are being used simultaneously can have their load-sustaining hooks d manipulated by a single attendant, either separately or simultaneously, at pleasure, by means simply of suitable cords or rods attached at their upper ends to the hooks of the two machines, as shown at 0 0, and connected at their lower ends to a common loop, 1?, in such manner that bypulling upon a rod or rope, 20, attached to said loop P, either in one direction or another laterally either one or the other of the hooks may be manipulated, and so that by pulling vertically down upon said rod or rope a both the said hooks maybe operated at once. The arrows at Figs. 2 and 4 illustrate the different directions in which the attendant may pull the cord at, depending from the ring P, for the purpose of manipulating either one or both of the loadsustaining hooks (Z at pleasure. This arrangement of the hooks d in a pair of the traveling carriages F, and this means for manipulating said hooks render it exceedingly convenient; and expeditious for an attendant to manage the machines in pairs with reference toithe lowering and discharging of the buckets or tubs singly or in pairs, as may be desired. These sustaining-hooks (Z co-operate with the hoist-blocks and their hoist-rope in such inanner that while the loads can be raised and lowered by the engineer no bucket can be lowered without the co-operation of the attendant on the ground, and at the same time the lowering of the bucket by the attendant cannot be effected except with the knowledge I and cooperation of the engineer, who has to manipulate the h0ist-rope in such manner as to relieve the sustaining-hooks d from the gravity of the load before the attendant can manipulate the hooks, (in the manner just above explained,) and thus permit the descent of the loaded bucket; but this feature need not be further explained herein, as it constitutes no part of the subject-matter of invention sought to be covered by this application.

Having now so fully explained the several novel features of construction of my improved apparatus that those skilled in the art can make and use a hoisting and conveying machine embracing either one or all of said fea tures in either the precise'form or forms in which I have used them or in some other adapted to answer the same purpose, and wishing it to be understood that the details of construction with reference to any or all of the said novel features may be more or less varied without departing from the spirit of my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. The combination, with the carriage F and 40 the sheave block J, of a suitable cushion or buffer, 0, operating, substantially as specified, to receive and take up any sudden shock or momentum which might otherwise injuriously jar the apparatus upon any sudden and too great elevation of the sheave-block.

2. In combination with a pair of traveling carriages, F, the sustaining-hooks (1, arranged as specified, and cords or rods which are connected to said hooks and are connected together at their lower ends, whereby with the use of some suitable implement an attendant may manipulate the hooks d of the carriages either separately or simultaneously, in the manner and for the purposes hereinbefore specified.

3. In a hoisting and conveying machine of that type which embraces a tramway of some sort for the traveling carriages, a hoist-rope anchored to one end of the tramway, an end less carriage-driving rope, and the clamps or securing devices f on the carriages E, which serve to clamp the carriage to the traversing or driving cable at any desired points, in substantially the manner and for the purposes explained.

In witness whereof I have hereunto set my hand this 31st day of August, 1886.

ALEXANDER E. BROWN.

In presence of E. T. ScovILL, CHAS. W. KELLY.

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