US899758A - Derrick. - Google Patents

Description

6F. R. PATGII.y

' DERRIGK.

rAPPLIoM'IoN FILED JULY 22,1908.

Patented' sept. 29,

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FREDR. PATCH, OF RUTLANI), VERMONT.

DEER/IGK.

' Specification of Letters Patent.

' Patented sept. 29, 1908.

' Application sled July 22, 1908. serial No. 444,838.

To'aZZ whom it may concern:

Be it known that I, FRED R. PATCH, citizen of the United States, residing at Rutland county of Rutland, and State' of Vermont, have invented certain .new and useful Improvements in Derricks, of which the following is a specication, reference being had therein to the accompanying drawing.

.This invention relates to a derrick, and particularly to a fall line connection for the main hoisting line from the boom.

The invention has for an object to provide a carriage disposed between the base of the derrick mast and the hoisting power and connected with the hoisting line carried by theA boom of the mast so as to ermit the lifting of the load to the desired height without necessa'fily increasing the height of the mast, as the travel of the carriage upon the ground may be for any desired extent necessary to secure the desired lift at the upper end of the boom.

A further object of the invention is to provide a novel and improved construction of carriage adapted for connection to the hoisting line and fall line and provided with heaves comprising-a fall -block in a tackle connection between the hoist line and p ower.

Other and further objects and advantages of the invention will be hereinafter fully set forth and the novel features .thereof defined by the ap ended claims.

In the rawingr--Figure 1 is an elevation of the invention applied to a derrick; Fig. 2 is a plan of the carriage; Fig. 3 is an end elevation at the left of Fig. 2. Fi 4 a plan and Fig. 5 an elevation of the fal line connection. 1-

Like numerals refer to like parts in the several views of the drawing.

The numeral 10 designates the mast of the derrick which may Ibe of any desired construction and suitably supported in position by means of the guy ropes 11 extending therefrom to a fixed oint. This mast is ro.- vided at its base wit the usual bull whee 12 and has the boomk 13 pivotally mounted thereon at 14, the upper end 15 of this boom being connected by tackle line 16 with the mast block 17 from whichconnection the boom fall line 18 extends to the hoisting power as indicated at 19. The. disposition of this power relative to the mast determines the arrangement of this line, for instance,it

may be carried by the block 20 disposed on the ost or mast 21 and thence to the usual Win ing drum 22. The boom is provided at its u er end with the bearing sheave 23 over whiclh the main hoistline extends. In the arrangementof the line here shown for heavy weights, one end thereof is secured to the boom at 25 'and the loop thereof carries the connecting block'26 to which the weight is attached. In the lifting of lighter Weights this block maybe connected to the single end of the line as usual in the art. The stay line 24 passes over the sheave 27 at the lower end of the boom and thence over the guide sheave 28 at the base of the mast disposed to bring the linev 24 into a horizontal plane where it is attached to the carriage '29. From this carriage the fall line 30 extends to the hoistingdruml31 of the line 30 being connected at 32 to the carriage and extending thence to the xed tackle blocks 33 and thence returning over the l sheaves 34 upon the carriage to the winding drum 31 so as to secure the necessary pull and-length of lift for the load relative to the height of mast and boom. This carriage is mounted upon the tracks or ways 35 supported in any desired manner and having intermediate of the rails thereof at suitable oints horizontally disposed bearing rollers 36 ada ted to support any slack in the fall line w en the same is being overhauled. These rollers are pivotally mounted in suitable blocks 37 at the opposite ends thereof.

The carriage 29 com rlses a frame formed of parallel longitudinal y extending stra s or bars 38 mounted upon the axles 39 which extend transversely thereof. Upon the outer ends of these axles the carrier wheels 40 are mounted to travel on the tracks 35, while at one end of the carriage the frame bars 38 lare connected by'across bolt 41 with the hoist line connection 48./The opposite ends of4 these bars are spaced apart by blocks 42 and connected by cross pins 43. The sheaves 34 are each rotatably mounted upon the axle 39 and may be 'arranged in any desired position thereon relative to the multiple of the fall line to be carried by the carriage which forms the `fall block of the tackle connection. the present illustration two sheaves are disposed upon each axle of the carriage. These sheaves are each surrounded by a line shield or guard 44 by which the fall line is retained in properl position thereon and prevented from disengagement. The shields are mounted upon the frame at one side of the axles and completely surround a portion of the sheaves 34. The frame is also provided at 45 with a track lock extending downward therefrom, as shown in Figs. 2 and 3 to engage beneath the tread of the rails 35 and thus prevent either lateral or vertical displacement of the carriage froml the rails under hoisting strain.

Any desired means for overhauling or the return movement of the carriage may be provided, such, for instance, as the weight of the blocks or connections carried by the main hoisting line, but a desirable connection for providing a positive overhauling action is secured through the overhaul line 50 which is attached to the carriage at 5l and extends over a -block 52 fixed adjacent the base of the mast and thence extends to the winding drum 53 which may be controlled in any manner. It is here shown as mounted upon the shaft of the drum 31 and of less diameter.

In order to secure the necessary direction of travel of these lines the main hoist rope is attached to the under side of its drum and the overhaul rope attached to the upper side of its drum so that when one is winding in the other is playing out.

In the operation of the invention it will be seen that the fall line tackle provides the necessary pull for the hoist rope carried by the boom and may be formed of any desired length so as to secure the maximum length of lift of which the predetermined lengthl of the boom is capable without requiring additional height of the mast which has heretofore been necessary when the fall line was disposed thereon thus materially economizing in the cost of the derrick and providing a more emcient, substantial and accessible disposition of the fall block, as the carriage arrangement provides for any desired multiple of the fall line thereon and exerts the minimum of friction in its operation. By a proper arrangement of the tackle between the hoisting power and carriage a limited travel of this carriage upon the track can be utilized to effect the desired height of lift. The construction of this carriage also provides means by which the sheaves are directly mounted upon the axles thereof and the rope retained thereon by shields, while any movement laterally or vertically is resisted by the track locks. During the hoisting operation the carriage moves toward the hoisting power and in the overhauling or return movement the necessary power is provided by the overhaul line. While the track has been herein shown as extending from the derrick to the power this is not necessary in all cases as the track need only be of sufficient length to obtain the height of lift desired and can be dis osed at any desired points intermediate or Ibetween the mast base and power.

Having described my invention and set forth its merits, what l claim and desire to secure by Letters Patent is 1. A derrick comprising a mast and boom, a hoist line extending from the outer end of said boom to the base of said mast, a hoisting power, a carriage connected with said line and mounted to travel between the mast base and power, and a tackle extending between said carriage and power.

2. A derrick comprising a mast and a boom, a hoist line extending from the outer end of said boom to the base of said mast, a hoisting power, a carriage connected with said line and mounted to travel between said mast base and power, and a tackle extending from said carriage over a fixed block and thence over a sheave upon said carriage to said power.

3. A derrick comprising a mast and a boom, a hoist line extending from the outer end of said boom to thebase of said mast, a hoisting power, a carriage connected with said line and mounted to travel between the mast base and power, a tackle extending between said carriage and power, track rails for said carriage, and bearing rollers intermediate of said rails.

4. A derrick comprising a mast, a boom pivoted thereon and having a guide sheave at each end, a hoist line extending over said sheaves to the base of the mast, a hoisting power, a carriage connected to said line and mounted to travel between the mast base and power, and a connection between said carriage and power.

` 5. A derrick comprising a mast, a boom pivoted thereon and having a guide shcave at each end, a hoist line extending over said sheaves to the base of the mast, a hoisting power, a carriage connected to said line and mounted to travel between the mast base and power, tackle sheaves mounted upon said carriage, and a tackle extended between said carriage and power.

6. In a derrick, a fall block carriage comprising a frame having an axle mounted thereon, carrier wheels on said axle, a sheave rotatably mounted on said axle, and hoist and power line connections with said carriage.

'7. In a derrick, a fall block carriage comprising a frame, an axle mounted thereon, carrier wheels on said axle, a sheave rotatably mounted on said axle, hoist and power line connections with said carriage, and a shield surrounding said sheave.

8. In a derrick, a fall block carriage comprising a frame having an axle mounted thereon, carrier wheels on said axle, a sheave rotatably mounted on said axle, hoist and power line connections with said carriage, and a track lock mounted upon said carriage and extended beneath the tread of one of the rails upon which said carriage travels.

9. In a'derrick, a fall block carriage comprising a frame formed of arallel members connected together at eac end, hoist and fall line connections with said frame, axles mounted in said frame and provided with carrier wheels, and sheaves mounted upon said axles intermediate of the parallel frame members. n

10. In a derrick, a fall block' carriage comprising a frame formed of arallel members connected together at eac end, hoist and Jfall line connections with said frame, axles mounted in said frame and provided with carrier wheels, sheaves mounted upon said axles intermediate of the parallel frame members, and shields surrounding a portion of said sheaves and supported bythe frame at one side of the axis ofthe sheave.

11. In a derrick, a fall block carriage comprising a frame formed of arallel members connected together at each) end, hoist and fall line connections with said frame, axles mounted in said frame and provided with carrier wheels, sheaves mounted upon said axles intermediate ofthe parallel frame members, shields surrounding a portion of said sheaves and supported by the frame at one side ofthe axis ofthe sheave.

12. Ina derrick,- a mast and boom, a hoist line extending from the outer end of the boom to the base of the mast, a hoisting power, a track disposed between said'power and mast base, a carriage mounted upon said track and connected at one end with said line7 and a tackle connection. between the opposite end'of said carriage and said power.

13. In a derrick, a mast and boom, a hoist line extending from the outer end of the boom to the base of the mast, a hoisting power, a track disposed between said power and mast base, a carriage mounted upon said track and connected at one end with said line, sheaves rotatably mounted upon said carriage, and a tackle connection extending from one end of said carriage over a fixed block and thence over the sheave upon said carriage to the power.

14. In a derrick, a mast and boom, a hoist line extending from the outer end of the boom to the base of the mast, a hoisting power, a track disposed between said power and mast base, a carriage mounted upon said track and connected at one end with said line, sheaves rotatably mounted upon said carriage, a tackle connection extending from one end of carriage over a iixed block and thence over the sheave upon said carriage to the power, and means carried by said carriage to prevent vertical and lateral movement thereofupon the track rails.

15. A derrick comprising a mast and boom, a hoist line extending from said boom to the base of said mast, a hoisting power, a carriage connected with said line, a tackle extending between said carriage and power, and an overhaul line extending from said carriage over a block adjacent the mast and thence to a power device.

In testimony whereof I affix my signature in presence of two witnesses.

FRED R. PATCH.

Witnesses:

T. A. 4REARDON, F. H. RICH.

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