US808246A - Hoisting and conveying apparatus. - Google Patents

Description

PATENTED DEC. 26, 1905. T. S. MILLER & J. H. DICKINSON.

HOISTING AND CONVEYING APPARATUS.

APPLICATION FILED MAY 12.1905.

PATENTED DEC. 26, 1905. T. S. MILLER & J. H. DICKINSON.

HOISTING AND CONVEYING APPARATUS.

APPLICATION FILED MAY 12. 1905.

3 SHEETS-SHEET Z.

PATENTED DEC. 26, 1905. T. S. MILLER & J. H. DICKINSON. HOISTING AND CONVEYING APPARATUS.

APPLICATION FILED MAY 12.190".

0 3 SIIBETS--SHEBT 3.

UNITED STATES PATENT OFFICE.

THOMAS SPENCER MILLER, OF SOUTH ORANGE, AND JOSEPH H. DICKINSON, OF MONTOLAIR, NEW JERSEY.

Specification of Letters Patent.

Patented Dec. 26, 1905.

Application filed May 12,1905. Serial No. 260,186-

1'0 all whom it may concern:

Be it known that we, THOMAS SPENCER MILLER, a resident of South Orange, in the county of Essex, and JOSEPH H. DICKINSON,

5 a resident of Montclair, in the county of Essex, State of New Jersey, citizens of the United States, have invented certain new and useful Improvements in Hoisting and Conveying Apparatus, of which the following is a specification.

This invention relates to certain novel and useful improvements in hoisting and conveying apparatus, and has particular application to means for regulating the tension of overhead cables in apparatus of the class mentioned.

In logging apparatus the process of gathering the logs gradually rotates around the head spar-tree, and as it is necessary to shift the tail end of the main cable from one tail-tree to another it is frequently requiredtoraise and lower such main cable, and especially is this the case where two main cables are employed, so that while one is being operated the rigging crew is at work getting the other in position on the next run. In such an instance when all the timber adjacent to one main cable is gathered that cable is dropped by disconnecting it from the main-cable connection at the head tree, and the other main cable which has already been positioned by the rigger is connected to the main-cable extension and tightened up.

In order to permit the main cables to be readily and expeditiously raised and lowered for the purpose of connecting and disconnecting the same and to permit the cables to be tightened or tensioned to the desired extent, we have devised means forming the subjectmatter of this application.

Our invention consists in the construction, combination, and arrangement of parts set forth in and falling within the scope of the appended claims, and while we have herein shown and described a preferred embodiment of our invention we wish it to be understood that we do not limit ourselves to the precise details and the particular arrangement of parts which for the purpose of illustration we 0 have delineated,

In the accompanying drawings like characters of reference indicate like parts in all the views.

Figure. l is a view illustrating our invention as employed in hauling a log, the position of the mam cable and its connections with the main-cable extension when lowered being shown in dotted lines. Fig. 2 shows a slightlymodified form of the invention, in which a swivelpulley is suspended from the heelblock interposed between the main cable and the main-cable extensionv Fig. 3 shows still another form of our invention, in which case the main-cable extension consists of two guys pi rppes secured to the tightening or heel Referring now to the accompanying drawings in detail, A indicates a head spar-tree,

adjacent to which is situated the engine B.

5 is the main cable, along which is designed to travel the carriage C, such cable being sup ported and tensioned through the means hereinafter described.

6 is the out-haul rope connected to the drum b of the engine and passing over a sheave-pulley 7, secured to the head-tree, said out-haul rope thence passing over the carriage to the tail-tree (not shown) and back to the carriage, to which it is secured at 8.

9 is a skidding-rope which is attached to the drum B and passes over the suspended pulley 10 and thence to the carriage O.

The slack pulling-rope of the apparatus is shown at 11, such rope being attached at one end to the drum B of the engine and after passing over the block or pulley 12, rigged on the spar-tree, is also secured to the carriage C. In addition a short skidding extensionrope 13 is employed, to the end of which tongs 14 are attached, said rope being also attached at one end to the carriage O.

The operation of the apparatus is well known, the out-haul rope being employed to draw the carriage along the main cable, and upon arriving at the point where the log or logs are to be picked up the tongs are lowered to the ground by drawing in the slack pullingrope, and the skidding extension-rope, to the end of which the tongs are attached, is thus paid out to enable the tongs to be hooked to the log. I/Vhen a certain run has been cleared and it is desired to shift the main ca ble or to drop one main cable and substitute another, so that the skidding operation may be continuous and not interfered with by the riggers, we employ the following means: In Fig. 1, 15 is a short rope or main-cable extension passing over the block 16, rigged t0 the spar-tree, while 17 and 18 are guy-ropes secured at one end to the end 19 of the short main-rope extension and at their opposite ends are looped about stumps or other anchors 20. The end 21 of the rope 15 is connected to running heel-block 22, which block is adapted to be detachably connected at 23 to the main cable 5. 241 is a rope or line secured to a drum B of the engine, which rope passes over the block 25, suspended from the lead-tree and is reeved in the block 22.

The operation of the device is substantially as follows: If the apparatus is in the position shown in full lines in Fig. 1 and it is desired to lower the main cable to detach the same and connect up a second main cable in place of that detached, it is only necessary to pay out upon the rope 24, which will run through the heel-block 22 and lower the cable, as is shown in dotted lines in said Fig. 1, so that the main cable may rest upon the ground. By withdrawing the pin 26 or other connection the main cable may be detached from the block and another main cable hooked or connected thereto. By winding in the rope 24% with its engine-drum B the main cable may be raised until it assumes its normally elevated position. Through the medium of this arrangement the necessity of moving the heavy heel-blocks, which are ordinarily connected to the stumps or anchors 20, is obviated, and the operation of skidding is not interfered with to any great extent while the main cable is being changed. Ordinarily it is necessary to consume considerable time in changing the cable at the head and tail tree, while with our invention it has been stated the second main cable, which is attached to another tail-tree, may be readily connected to the block when lowered to the ground. in the place of that previously employed. While the new cable is being used, that previously in use may be strung around to another tailtree and secured thereto ready to be substituted in place of the cable in use when the run shall have been logged. In Fig. 2 instead of securing the guide-block or the rope 24 to the spar-tree we have shown the same in the form of a swivel-block 25, connected to the running-block 22, and a second block 27 is secured at the base of the spar-tree, this arrangement enabling us to attain a more direct application of the tension.

In Fig. 3 instead of employing a single main-cable extension, to which the guys are secured, we dispense with the short rope 15 and run the ends of the guys over the guidesheave 2S and secure the ends 29 and 30 of said guys to the heel-block, as is shown at 31. The tension-rope 24 in this case passes from the engine through the block 32, secured to the stump or anchor 33, and thence up and through the block in the ordinary manner.

Having thus described our invention, what we claim, and desire to secure by Letters Patent, is-

1. The combination of a main cable, a maincable extension, and a tensioning device interposed between the main cable and the main-cable extension.

2. The combination of a main cable, a maincable extension and a detachable tension device connecting the main cable and the maincable extension.

3. The combination of a main cable, a maincable extension, a running-block connecting the main cable and main-cable extension, an engine and a tension-rope for the block operated by said engine.

4. In a conveying apparatus the combina tion with a head-spar and main cable, of a guy, a main-cable extension secured to said guy at the head-spar, and a tension device connecting the main-cable extension and the main cable.

5. In a conveying apparatus the combination with. a head-support, a main cable along which. the carriage is adapted to travel,means for raising, lowering and tensioning the main cable, such means comprising an engine, a block interposed between the main cable and the head-support and connected to the main cable, and a rope for said block operated by said engine.

6. The combination of a head-support, a running-block suspended therefrom, and a main cable detachably secured to said block.

7. The combination of a head-support, a rope-support secured thereto, a rope passing through said support, a tension device connected to said rope, a cable detachably connected to the tension device, and an engine for operating said tension device.

8. The combination of a support, a ropesupport secured thereto, a rope passing through said rope-support, a cable, a detachable connection between the cable and the first-mentioned rope, and means for tensioning said connection. I

9. The combination of a support, a main cable along which the carriage is adapted to travel, and a running connection between the cable and the support.

10. The combination of a support, a main cable, a block suspended from said support, a second block connected. to the cable, a running-rope connection to said block, and an engine for operating said rope.

11. The combination of a support, a main cable, a guy extending over a block secured to the support, a tension device secured to said guy and detachable at one end and detachably connected to the main cable, a tension'rope for said connection, and a reversible drum for operating said rope.

12. The combination of a support, a main cable, a tension device interposed between the main cable and the support connecting the same, a tension-rope for said'device, an engine for operating said rope, and a sheaveblock located between the device and the engine and through which said rope passes.

In testimony whereof We have hereunto signed our names in the presence of the subscribing witnesses.

THOMAS SPENOER MILLER. JOSEPH H. DICKINSON.

Witnesses for Thomas Spencer Miller: LoUIs Gr. RUGGLEs,

JOHN SINCLAIR.

Witnesses for J. H. Dickinson:

A. M. DICKINSON, M. MARTINDELL.

Images