US2312583A - Tackle - Google Patents

Description

March 2, 1943. R PENLQN 2,312,583

TACKLE Filed Dec. 1, 1941 2 Sheets-Sheet l INVENTOR. fox D. PENL ON imp ATTORNE Y8.

March 2, 1943. R. D. PENLON 3 TACKLE Filed Dec. 1, 1941 2 Sheets-Sheet 2 INVENTOR. 130x .0. PENLON MT M X?- Patented Mar. 2, 1943 UNITED STATES FATEN'E' GFFICE TACKLE Rox D. Penlon, San Francisco, Calif.

Application December 1, 1941, Serial No. 421,139

8 Claims.

This invention relates to a block and tackle arrangement whereby an operator may work in perfect safety over the face of a building, a church steeple or other structure difficult of accesswithout the use of a scaffold.

The object of the present invention is to provide a simple form of block and tackle whereby an operator may be suspended in such a manner that it will be possible to move at will both up or down or laterally with relation to a vertical or steeply inclined structure; to provide a saddle which supports an operator in comfort, and which is secured to the operator so that there can be no accidental release or falling out of the same; to provide a tackle which provides a high factor of safety to the operator, and, at the same time, provides sufiicient freedom to permit efficient work to be performed; to provide a tackle which is suspended from two spaced points between which the operator can move any direction vertically, angularly and horizontally, and further to provide a tackle which is reversi ble, so that only one point of suspension need be changed when shifting the tackle longitudinally over an extended surface. The tackle is shown by way of illustration in the accompanying drawings, in which Fig. 1 is a front view of a building, said View also showing the tackle suspended and in posi-' tion for an operator to work over the face of the buildin Fig. 2 is an enlarged side view of the triple pulley block;

Fig. 3 is a similar view showing one of the side plates of the triple pulley block removed; 4-4

Fig. 4 is a cross section taken on line g- Fig. 5 is a similar section taken on line 55 Fig. 2.

' The tackle forming the subject matter of the present application employs three pulley blocks such as indicated at 2, 3 and 4, a single cable or rope 5, and a saddle generally indicated at 6 for the support of an operator. The blocks 2 and 3 are identical, and each of them contains two pulleys over which the rope 5 is reeved, as will hereinafter be described. The block 4 contains three pulleys indicated at l, 8 and 9, and also two anchoring members and II. One end of the rope a is permanently attached to the anchor l0, while the other end 5b is detachably secured to an anchor H.

The rope is reeved over the several pulleys in the following manner. Commencing V at the point 5a. the rope is extended upwardly and passes over one of the pulleys of block 2, it then extends down and it passes over the pulley 1, then up and over the second pulley in the block 2, then down again and under the pulley v8 in block 4, then up and over one of the pulleys in block 3, then down and over pulley 9 in block 4, then up again and over the second pulley in block 3, and then down to the anchor H on block 4 where it is releasably secured, as previously described. The rope is thus reeved over seven pulleys, and as such presents two points of suspension for the block 4, which are indicated at A and B, and each suspension contains four ropes totaling eight ropes from which the operator is suspended. In actual practice a one-' half inch manila rope is employed,'and when reeved through the locks as here lshown will readily support a load of 2000 pounds, and as the average operator together. with any tools he may employ will seldom exceed 200pounds in weight, there is provided a safety factor of at least 10 to 1.

The pulley blocks 2 and 3 are standard double pulley blocks as each contains two pulleys. The block 4, on the other hand, is'of special design. It consists of two substantially triangular shaped metal plates [5 and I6 (see FigsJZ to 5inclusive) spaced apart by'bushings [1, upon which the'pulleys 1, 8, and S are journaled. The'plates of the blocks are secured together by bolts 18,- or

the like, extending through the bushings, and 7 also by a bolt I9, from which hangs a' yoke 20 and a swiveled hook 2!. Attached in any suit able manner to the inner faces of the block plates 15 and I6 are filler'plates 22. These are only placed in the shaded area indicated at [6 in Fig. 3, and reduce the space between the plates to one-half inch or, in other words, to the diameter of the rope passing over and under the pulleys I, 8 and 9. This is important, as it prevents the ropes from crossing or passing one over the other at any point between the plates l5 and it of block 4, as such crossing of the ropes might cause the'block to jam, and thereby prevent a free run or play of the rope through the several pulley blocks.

The anchor member H is duplicated on each sideof block 4, and so are a pair of hook'shaped members 25 to permit block 4 to be reversed, as will hereinafter be described. I

In actual operation any suitable support may be provided for the operator. In'this instance a saddle is provided, which consists of 'a pair of sole leather sections 26 which engage'the rear sides ofthe thighs of the operator and function as seat members. These leather sections are adjustably secured to a belt 21, which surrounds the waist of the operator. This is in turn suspended from the hook 2| by a ring or the like, and the operator is thus suspended from block 4'in a manner whereby it may be said that he is strapped in, yet is permitted all the freedom required for the work in hand.

The operator may raise and lower himself by releasing the rope from the anchor .l I, and-then hauling in or paying out on the rope as the case may be, and, when reaching the position desired, securely fastening the rope. He may move laterally by walking or pushing his feet against the surface on which he is working, or by pulling on the rope section which passes under the pulley 8. For instance, if he desires to move to the right, he pulls on the rope sectionindicated at 50, and if he wants to move towards the left, he pulls on the rope section indicated at 50!, and'if hetemporarily wants to secure himself in any position to the right or left he may take either of the rope sections 50 or 5d, and hook it over the hook 2|.

With this tackle an operator can work over any area between and vertically below the two main points of suspension indicated by the blocks 2 and 3. This surface may be vertical or inclined, such as the face of a building, a tower, a steeple etc. Any type of work may be performed, such as painting, repairing, welding, cutting, inspecting, wrecking etc. Also, where a water tank is supported byan open work frame or tower, one block such as 2 may be secured to one side of the tower, and block 3to the other side, and the operator may thus be suspended beneath the bottom of the tank to paint or work thereon.

When working on the surface of'a building, such as shown in Fig. 1, when the area-below and between the blocks 2 and 3 is finished and it becomes necessary to shift, for instance to the right, it will only be necessary to release the block 2 and move it past the block 3 to the next position. In-doing so block 4 becomes reversed, and it is for this reason that the attachments to the plates and 16, such as the hooks and the anchor members I i, are duplicated. Reversal ofblock is permitted during shifting, which eliminates the necessity of releasing more than one block when shifting the tackle, and while this and other features of the invention have been more or less specifically illustrated and described, I wish it understood that changesmay beresorted to within the scope of the appended claims, and that the materials and finish of theseveral parts may be such as the experience ofthemanufacturer or varying conditions of use may .demand. 7

Having thus described my invention, what I claim and desire to secure by Letters Patent is:

1. .A' tackle of the character described comprising a pair of blocks each containing two pulleys, means for securing said blocks to a support, three connected single pulleys, means for suspending an operator from said connected single pulleys, and a single rop reeved over all of the pulleys and having an end anchored to the connected single pulleys and the other end detachably secured thereto, whereby the operator can move'himself vertically and horizontallywith relation to the pair'ofsecured pulley blocks.

2. A tackle of the character described comprising a pair of blocks ,each containing two pulleys,-means for securing said blocks to a support, a single rope reeved through said pulleys and suspended therefrom, a support for an operator, and means for suspending said support from the rope in a manner to permit the operator to move himself both verticaly and horizon-.

tally with relation to the secured pulley blocks.

3. A tackle of the character described comprising a pair of blocks each containing two pulleys, means for securing said blocks spaced apart to a support, a single rope reeved through said pulleys and depending therefrom, a support for an operator suspended from said depending rope, means for anchoring one end of the rope to the support, means for detachably securing the other end of the rope to the operators sup- 1 port whereby an operator by hauling or paying out on the detachable end of the rope can move vertically, and means on the support whereby the operator can move horizontally and anchor himselfafter moving horizontally.

4. A tackle of the character described comprising a pair of blocks each containing two pulleys, meansfor suspending said blocks from a support, three connected single pulleys, means for suspending an operator from said connected single pulleys, and a single rope reeved over all of the pulleys and having an end anchored to the connected single pulleys and the other end detachably secured thereto, and a support for an operator suspended fromthe connected single pulleys.

5. A tackle of the character described comprising a pair of blocks each containing two pulleys; means for suspending said blocks from a support, a block containing an upper and a pair of spaced pulleys below the same, a single rope anchored to said block and reeved over all the pulleys in the several blocks to suspend the last named block from the first named pair of blocks in a. manner to permit the last named block to be raised or lowered with relation to the pair of blocks by hauling in or paying out on the other endof the rope, means for detachably securing the free end of the rope to the last named block and when 50' secured leaving said block free to move longitudinally on the rope between the pair of blocks, and an operators support suspended from the last named block, and means on said block for securing it against longitudinal movement on the rope.

6. In a tackle of the character described a pulley block comprising a, pairof spaced apart plates, an upper pulley, a pair of pulleysdisposed below the same and spaced apart all of said pulleys being journalled between the'plates, a permanent anchor attached to the plates to receive one end of a rope, a pair of anchors one on each plate to releasably anchor the other end of the rope, and a pair of downwardly directed hooks one on each plate and adjacent the upper pulley to receive and secure a portion of the rope passing under the upper pulley.

'7. ha tackle of the character described a pulley block comprising a pair of spaced apart plates, an upper pulley, a pair of pulleys dis posedbelow the same and spaced apart all of said pulleys being journalled between the plates, a permanent anchor attached to the plates to receive one end of a rope, a pair of anchors one on each plate to releasably anchor the other end of the rope,,and a pair of downwardly directed hooks oneon each plate and adjacent the upper pulley to receive and secure a portion of the rope passing under the upper pulley, and filler plates disposed between the first named plates to reduce the space between the first named plates to the diameter of the rope passing over and under the pulleys.

8. In a tackle of the character described a pulley block comprising a pair of spaced apart plates, an upper pulley, a pair of pulleys disposed below the same and spaced apart all of said pulleys being journalled between the plates, a permanent anchor attached to the plates to receive one end of a rope, a pair of anchors one on each plate to releasably anchor the other end 10

Images