US530902A - John pearce roe - Google Patents

Description

(No Model.)

J. P ROE.

RUNNING AND GARRYING UABLE. v No. 530,902. I Patented Dec. 11, 1894.

UNITED STATES PATENT OFFIcEr JOHN PEARCE ROE, OF LONDON, ENGLAND, ASSIGNOR TO THE ROPE WAYS SYNDICATE, LIMITED, OF SAME PLACE.

RUNNING AND CARRYING CABLE.

- s'PEoIFIcA'rioN forming part of Letters Patent No. 530,902, dated December 11,1 894. Application filed January 30, 1894. Serial No. 498,443- (No model.)

tions, that only one projection-at a time will To all whom it may concern:

@be caused by the action of the load carried Be it known that 1, JOHN PEARCE Ron, a subject of the Queen of Great Britain and Ireland, residing at.150 Leadenhall'Street, in rope by the action of the load carried. For the city of London, England, haveinvented' ithis purpose, the groove in the under side of Improvements in Apparatus for Transportgeach block is made doubly inclined or of a ing Leads by Means of Traveling Ropes or circular arc shape in the direction of its Cables, of which the following is a specificalength, so that when the block is turned on tion, the rope as a bearing, in one direction, the

In the specification of Letters Patent grantaprojection within its groove will be brought ed to me, No. 38,949, of October .21, 1890, I into proper position to engage a strand of the have described constructions of apparatus rope, and when turned in'the opposite direcfor transporting leads by means of traveling tion such projection will be turned into its ropes in which an adjustable grooved. block inoperative position and clear of the strands or blocks provided with internal projections of the cable so that it cannot then interfere (or recesses) is or are employed to engage with the proper action of the operative prowith the lielically twisted strands of the rope jection in another block. In a modified confor the purpose of fixing the apparatus to the struction, the projection is carried by a movsaid rope. To render the apparatus edective able holder and held in position by a spring. whether ascending or descending. gradients, In the accompanying drawings, Figures 1 one of the grooved blocks, when two are used, and 2 are vertical sections illustrating my imis provided with a projection arranged to enproved forms of grooved blocks. 'Figs. 3, 4 gage under a strand of the rope and'prevent and 5 are side elevations illustrating the apthe block slipping longitudinally in one diplication of such blocks. Figs. 6 and 7 show rection'- upon the rope, while the other block in side and end elevation respectively, a form is provided with a projection adapted to act of grooved block with movable projection. in a similar manner and prevent its block Figs. 8 and 9 are end and under side views slipping in the opposite direction on the rope, respectively, one projection only being efiectively engaged with an improved form of proj eetion therein. with the rope ata time. When one adjust- Referring to Figs. 1 and 2, 1 is a gripping able block only is used,itsgroove is provided bloek'of the kind referred to having in its with oppositely arranged projections, that or under side a V-shapedgroove 2 which accord those on one side coming into operation when ing to this invention, instead of being made the apparatus is ascending a gradient, and straight as in myformer constructions of such that or those on the other side coming into blocks, is made either doubly inclined in the operation when the apparatus is descending direction of its length as shown in Fig. 1, or a gradient. of circular arc shape as shown in Fig. 2, so

In each of the above mentioned arrangethat such block can turn or oscillate upon the ments, the projection that is, (for the time rope as a bearing, 3 being the projection being,) out of aetion,is liable under some cirformed on one side of such groove. cumstances to ride upon or assume sucha po- Figs. 3 and 4 show two such grooved blocks sition relatively to the strand of the rope'adapplied to a frame or backbone 4 the projecjacent thereto as to materially interfere with tion 3 on the front block 1 being at the forthe proper engagement of the other projecward portion of the groove therein and that tion with the rope, and an object of this in- (3*) on'the rear block 1* being at the rearvention is to obviate this disadvantage. .For .wardportion of the groove in such block. this purposeIso form and arrange the grooved With this construction assuming that the block or blocks, orparts carrying the projectraveling rope 5 is running in the direction ito engage with or bear against a strand of the f,

showing part of a grooved block to work against the under side of the strands of the arrow, and that the portion thereof on which the apparatus is applied commences to move in a downward direction, the frame 4, under the action of the load carried thereby, will move longitudinally for a short distance relatively to the blocks and rock or turn them on the rope into the positions shown in Fig. 3, so that the projection 3 on the inner side of the forward block will be brought into the proper position to engage a strand of the rope, while the projection 3* on the inner side of the rearward block will be raised clear of the rope as shown, and thus rendered inoperative thereon. When the rope becomes inclined in the opposite direction, although traveling in the same longitudinal directm as before, the frame 4 will move a short distance in the opposite or backward direction and automatically move the blocks into the positions shown in Fig. 4, in which the proj ection on the rearward block will be brought into the operative position and that on the forward block into the inoperative position. The movement of the blocks may be effected by pins 6 carried by the ends of the frame and extending through slots 7 formed in the corresponding blocks. In this way the projection that is for the time being out of action is prevented from riding or assuming such a position relatively to a strandof the rope as to interfere with the proper engagement of the other projection with the rope.

Fig. 5 shows an arrangement in which one rocking or oscillating block 1 only of the kind described is employed, the other end of the frame 4: being connected to an ordinary V- grooved block 8 that merely serves as a support therefor, the connection between the two being preferably such as to admit of slight turning movement of the block relatively to the frame, as when passing over a rope sheave or pulley. In this arrangement each grooved end of the block 1 is provided with a projection, one, say 3, being adapted to come into action on an ascending gradient, and the other (3*) on a descending gradient, the one that is for the time being inoperative being held clear of the rope as before.

Figs. 6 and 7 show a modified form of grooved block in which the projection 3 is carried by a movable slide or holder 9 acted upon by a spring 10, the arrangement being such that the said projection will always be in a position to engage the rope when moved thereon in the proper direction, but will be pressed upon the rope only by the spring, so

so tightly in place, after working on a steep gradient, as to interfere with their ready disengagement from the rope at the required times. To obviate this disadvantage I make each projection with a flat or curved vertical face 3 as shown in Figs. 8 and 9, adapted to act laterally against a strand of the rope instead of vertically against its under side, the said face, when flat, being made inclined to a vertical plane 00 ac, passing longitudinally through the groove in the block.

What I claim is- 1. Apparatus for transporting loads by means of a traveling rope, comprising a frame, grooved blocks carried thereby and adapted to take upon a traveling rope, and projections carried by said blocks and projecting into the grooves therein, the portion of each block carrying a projection being capable of movement to and from said rope while the remaining portion of said block bears upon said rope substantially as described for the purpose specified.

2. In apparatus for transporting loads by means of traveling ropes, a block formed with a groove or recess of bent form in longitudinal section and having one or more projecting parts adapted to engage with the helically twisted strands of a cable substantially as herein described for the purpose specified.

3. In apparatus for transporting loads by means of traveling ropes, a frame or backbone, and a block formed with a groove or recess of wedge shape in cross section and of bent form in longitudinal section so as to be capable of rocking or turning on the cable to which it is applied, substantially as herein described for the purpose specified.

4. Apparatus for transporting loads by means of traveling ropes, comprising a frame, and a block adj ustably connected therewith and having one or more projecting parts adapted to engage with the helically twisted strands of a rope, the groove in said block being doubly inclined in the direction of its length, substantially as herein described for the purpose specified.

5. Apparatus for transporting loads by means of traveling ropes comprising a frame, front and rear blocks each connected bya pin and slot connection with said frame and formed with a groove of bent form in the direction of its length, and oppositely arranged projections each adapted to engage with a helically twisted strand of a rope when moved that it is free to yield in an upward direction when inoperative and thus cannot interfere with the proper action of the operative projection in another block.

When the projections are of such a form as of the rope, as described in my said former longitudinally thereon, one of said projections being located in the forward grooved portion of said front block, and the other in the rearward grooved portion of said rear block substantially as herein described for the purpose specified.

6. In apparatus for transporting loads by specification, theyare liable to become wedged means of traveling ropes, a block formed with the combination of a groove to fit over a rope and provided with name to this specification in thepresence of 10 a projection formed with a flat or curved vertwo subscribing witnesses.

tioal active face inclined to a vertical plane passing longitudinally through the groove in JOHN PEARCE said block and adapted to engage the side of Witnesses:

a helically twisted strand of a rope substan- EDMUND S. SNEWIN, tially as herein described for the purpose WM. THOS. MARSHALL, specified. Both of 2 Popes Head Alley, Oornhill, Lon- In testimony whereof I have signed my o'lon, E. 0., Gentlemen.

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