US1958824A - Timber hoist - Google Patents

Description

T. JONES TIMBER HOIST May 15, 1934.

Filed Jan. 5, 1933 2 Sheets-Sheet 1 THOMAS JONES T. JONES TIMBER HOI ST May 15, 1934.

Filed Jan. 3, 1953 2 Sheets-Sheet 2 THOMAS JONES Patented May 15, 1934 PATENT OFFICE TIMBER HOIST Thomas Jones, Scranton, Pa.

Application January 3, 1933, Serial No. 650,010

2 Claims.

This invention relates to hoisting devices in general, and more particularly to hoisting devices employed in mines for placing the timber supports.

7 5 The main object of the invention is to provide a portable, simply constructed, adjustable and easily operated hoist for use in cramped quarters to raise horizontal timbers or collars to any height below or above the top of the hoist.

Other objects of the invention will become apparent as the detailed description thereof proceeds.

In the drawings:

Figure 1 is a side elevation of one form of my '15 hoisting apparatus as applied to the raising of horizontal timbers in mines;

Figure 2 is a similar side elevation of the device showing a timber cradle applied to the hoist and used in raising a horizontal timber above the top of the hoist;

Figure 3 is a plan view, to an enlarged scale, of the form of invention illustrated in Figure 2;

Figure 4 is a side elevation of the device to the same scale as Figure 3, parts being broken away to illustrate details of construction;

Figure 5 is a section taken on the line 5-5 of Figure 4;

Figure 6 is a front elevation of a cradle forming a part of the invention and having lifting attachments applied thereto for the purpose of raising the vertical members or legs of the timbering shown in Figures 1 and 2;

Figure 7 is a fragmentary side elevation of a modified form of the invention;

Figure 8 is a plan, to a reduced scale, showing the supporting base of another form of the invention; and

Figure 9 is a side elevation of the modification, the base of which is shown in Figure 8.

Referring now to Figures 3, 4 and 5 in which the preferred form of invention is illustrated, the invention is shown as comprising a pair of legs 1 and 2 connected at their upper ends by a cross bar 3 on which the pulleys 4 and 5 are rotatably mounted and suitably secured in spaced apart position on the cross bar 3.

The legs 1 and 2 are telescopic, and each comprises a tubular member 6 having its upper end provided with registering apertures 7 and 8 adapted to receive a tapered pin 9. The pin 9 is secured by a chain 10 to an enlarged head 11 formed at the upper end of a rod 12 which is slidably mounted in the tubular member 6. The

rod 12 is provided with a series of apertures 13 adapted to receive the pin 9 when any of the apertures 13 is brought into alignment with the apertures 7 and 8 in the tubular member 6. It will be obvious that by this construction each of the legs 1 and 2 may be adjusted to any desired height within the range of the apparatus.

The lower end of each tubular member 6 has secured'therein a sharp pointed plug 14 adapted to bite into a cross tie 15 of a track or runway which is usually provided in mines. Each head '11 has a pair of spaced apart apertured lugs 16 and 17 extending laterally therefrom and adapted to receive between them the upper apertured flattened end of a rod 18 forming part of a strut 19 for the framework of the hoist. Bolts 20 pass through registering apertures in the lugs 16 and 1'? and the upper end of the rods 18 to connect the said rods pivotally to the heads 11. Each of the rods 18 is slidably mounted in a tubular member 21 which, at its lower end, is flattened out to be received between a pair of lugs 22 and 23. The flattened end of the tubular members 21 and the lugs 22 and 23 are provided with registering apertures to receive'the pivot bolt 24.

The lugs 22 and 23 project upwardly from a clamping plate 25 which extends across a rail 26 of the track. An inverted U-bolt 27 has the legs thereof passed through apertures suitably formed in the clamping plate 25 on opposite sides of the rail 26. The lower ends of the U-bolt 27 are screwthreaded and these ends are passed freely through apertures formed in a clamping plate 28 extending across the bottom of the rail 26. Nuts 29 applied to the screwthreaded legs of the U- bolt are used to adjust the plate 28 toward and from the base of the rail 26.

It will be apparent from Figures 3 and 4 of the drawings that the clamping plate 25 will have a sliding movement on the rail 26, limited only by the space between adjacent ties 15. To clamp the plate 25 in adjusted position between these ties, the bight 30 of the bolt 27 has a cam member 31 pivoted thereon. A handle 32 extends from this cam member 31 to facilitate the clamping and unclamping of the plate. 25 on the rail 26. The clamps connected to each of the legs 19 are identical in construction. It will be obvious, of course, that this adjustment of the plates 25 along the rails 26 is for the purpose of moving the upper end of the hoist to facilitate the exact positioning of the horizontal members or collars C of the timbering.

One of the tubular members 19 has a bearing bracket 33 formed thereon to receive one end of a drum shaft 34, the other end of which extends through a bearing suitably formed on a split clamping sleeve 35 adapted to be adjusted along the tubular member 21 and clamped in position thereon by means of the bolts 36 and nuts 37.

A crank shaft 38 rotated by a crank handle 39 may be used to rotate the shaft 34 directly, or through any suitable gearing (not shown) enclosed in the gear box 40. The invention is not concerned with any particular form of gearing for effecting rotation of the shaft 34 as this will depend largely upon the weight of material to be handled by the hoist that may or may not be used.

The shaft 34 has drums 41 and 42 suitably secured thereto and cables 43 and 44 are secured to said drums to be wound thereon and unwound therefrom in their usual hoisting operation. The cable 43 is passed over the pulley 4 and terminates in a hook 45; and the cable 44 passes over the pulley 5 to terminate in a hook 46. The hooks 45 and 46 are adapted to be wound around the timber collar C, as shown in Figure 1, or to be hooked under a cross brace 47 extending between the two cradlebeams 48 and 49 which project laterally from sleeves 50 and 51 slidably mounted on the tubular members 6 of the legs 1 and 2.

The cradle beams 48 and 49 are provided at their upper edges with flanges 52 and 53. The flange 52 forms a sliding base for the slotted feet 54 and 55 of a standard 56 forming part of the framework of the cradle designated generally in Figure 2 of the drawings by the reference character 5'7. The standard 56 comprises two legs 58 and 59 connected adjacent their lower ends by a brace 60. A brace 61 secures the legs 58 and 59 substantially parallel to each other, and is provided at its center with an enlargement 62 adapted to receive one end of a cross bar 63 (see Figure 3). The upper ends of the legs 58 and 59 extend beyond the brace 61 to contact with a log or collar C to prevent the log from rolling oiT the cradle.

A second standard 56', similar in every respect to the standard 56, is mounted to slide on the flange 53 formed on the upper edge of the cradle beam 49. The two standards are rigidly connected to each other by the cross bar 64 extending between the brace 60 on the standard 56 and a similar brace 60' forming part of the standard 56'. The cradle 57 may be locked in adjusted position on the cradle beams 48 and 49 by any suitble means such as the set screws 65. The operation of this form of the invention will be apparent from inspection of Figures 1 and 2 of the drawings in which the hoisting apparatus and cradle are shown during the various steps of raising a horizontal collar C from the ground to an elevated position above the top of the hoist and against the ceiling of a mine shaft.

The enlargements 62 and 62 secured to the centers of braces 61 and 61 (see Figure 6) are in the form of hollow cylinders constituting sleeves adapted to receive the ends of cross bar 63, and of the outwardly directed hook bars 66 and 6'7, respectively. The opposite ends of the cross bar 63 and the inner ends of the hook bars 66 and 67 are secured in the sleeves 62 and 62' by means of tapered pins, similar to the pins shown in Figure 5, passing through registering apertures formed in the ends of the cross bar 63, hook bars 66 and 67, and in the sleeves 62 and 62. The outer ends of the hook bars 66 and 6'7 are shaped to form hooks 68 and 69 adapted to be passed through any of the links of the chains 70 and '71 having their lower ends provided with the usual swivel hooks 72 and '73. The lower ends of chains 70 and '71 are designed to form loops around the timber legs L intended to be raised to vertical position under the ends of the collars C for supporting the aforesaid collars against the ceiling of the mine shaft.

The outwardly directed hook bars 66 and 67 are supported at their outer ends by braces '74 and '75, respectively. The upper ends of these braces are pivotally connected to their respective hook bars and the lower ends are provided with enlargements '76 and 77 which are notched to seat over the braces 60 and 60' at the lower end of the cradle. The pins for securing the cross bar 63 and the hook bars 66 and 6'7 are secured by chains to the sleeves 62 and 62, respectively, so as to prevent their being accidentally lost.

It will be apparent from inspection of Figure 6 of the drawings that the hook bars 66 and 6'7 and the braces '74 and '75 may be removed bodily from the cradle itself merely by Withdrawing the outer securing pins from the registering apertures in the sleeves 62 and 62' and'the ends. of the hook bars 66 and 6'7. When these hook bars are used, it is intended that they shall be used as pole raisersto tilt the legs L of the timbering into a substantial vertical position under the collar C. In the use of this form of the invention the cradle will, of course, be raised by the ordinary hoisting cables 43 and. 44 in the manner indicated in Figure 2 of the drawings.

In Figure '7 of the drawings, there is shown a modification of the invention in which the vertical legs 1 and 2 of the hoist have the plugs 14 at their lower ends omitted. In this form of the invention, the legs 1 and 2 are pivoted at their lower ends to clamping plates 25 similar to the clamping plates25 shown in Figures 3 and 4 of the drawings.

The two plates 25 and 25' at each side of the hoist are pivotally connected to each other by links '78 so that the legs of the hoist and the angular braces may be bodily moved along the rail 26. The principle of the invention is the sameas that illustrated in the figures of the drawings already described; and the various elements are otherwise substantially the same as shown in the other figures of the drawings.

In the form of the invention shown in Figures 8 and 9, the pivotally connected leg and brace elements of the hoist have their lower ends pivoted to a rectangular baseplate '79 in any suitable manner. 'In every other respect the aforesaid braces and legs have the same construction as the corresponding members illustrated inthe modification shown in the other figures of the drawings. This form of the invention is intended for use where there is no runway or railroad track upon which the hoist, or the several elements thereof, can be mounted.

It is thought that the invention and numerous of its attendant advantages will be understood from the foregoing description, and. it is obvious that numerous changes may be made in the form, construction and arrangement of the several parts without departing from the spirit or connected at their upper ends to said legs, means for slidably and pivotally connecting the lower ends of said braces to said base, a drum shaft rotatably mounted on said braces, cables extending from said shaft over said cross bar, a cradle, means for mounting said cradle to slide on said legs, means for connecting the ends of said cable to said mounting means, and means for rotating said drum shaft to effect raising and lowering of said cradle relative to said legs.

THOMAS JONES.

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