US826051A - Power-shovel. - Google Patents

Description

, 12); p I XW- Nb. 826,051. PATENTED JULY 17, 1906. 0. J. OLSON, DEOD. C. OLSON, ADMINISTRATRIX. POWER SHOVEL. APPLICATION FILED MAR.31, 1905.

2 SHEETS-SHEET 1.

WITNESSES; LVVE/V TOR.

Wed/u) Mm ATTORNEY.

PATENTED JULY 17; 1906.

0. J. OLSON, DBOD. 0. OLSON. ADMINISTEATRIX.

POWER SHOVEL. APPLIOATION FILED MAR. 31, 1905.

2 SHEETS-SHEET 2.

LVVEIVTOR.

lV/TNESSES:

mfgmz A TTORNL I.

of? W% UNITED STATES OSCAR J.

PATENT oFEIoE.

OLSON, DULUTH, MINNESOTA; CARRIE OLSON ADMINIS- TRATRIX OF SAID OSCAR J. OLSON, DECEASED.

POWER-SHOVEL.

humanl r7, 1906'.

Application filed larch 31,1905. Serial No- 253,080-

I To all whom it may concern.-

Be it known that I, Oscar. J. OLSON, a citizen of the United States, residing at Duluth, in the county of St. Louis and State of Minnesota, have invented certain new and useful Improvements in Power-Shovels; and I do hereby declare the following to be a full, clear, and exact description of the invention,

such as will enable others sln'lled in the art to which it appertains to make and use the same.

M invention relates to ower-shovels, and has or its object the. pr notion of a simple and convenient power shovel apparatus adapted for ,ditchdigging or for various otherp oses.

It consists, in combination with a suitable support, of a derrick mounted thereon, a shovel-pole loosely secured to said derrick and provided at its foot with a shovel, means for operating said derrick, and means for operatin said shovel. I

It a so consists of certain other constructions, combinations, and arrangements of project into the aperture on said plate.

- struction parts, as will be hereinafter described and claimed.

In the accompanying drawings, Figure 1 represents a perspective view. of my said invention, partly roken away. Fig. 2 is a side elevation, artly in section and partly broken away, 0 a modified form of my said invention.

- In said drawings, 1 is a railway-track laid in short sections adapted to be alternately taken up and removed. to the rear as the shovel-supporting car retreats. Sup orted upon sai track is a car 2,. upon wllich is mounted a derrick-base 3, slotted, as at 3",'to form a cable-passage. Upon said base is an apertured base-p1ate'4, upon which is erected a horizontally-oscillating derrick-mast 5, in which is formed in any suitable manner a passa connecting with the aperture in said p ate. The foot of said mast is secured in position against horizontal movement in any suitable manner, as by forming a reduced end (not shown) thereon, adapted to The upper end of the mast is secured in position by any suitable guys or braces, as bythe braces or glllilys 6, 7, 8, and 9, which in the conustrated are provided at their upper ends with apertured straps, as 10,-

adapted to loosely engage a, pin 11,extend- I do 'not desire to be limited to the specific keeping themast in a vertical position, but permitting it to oscillate horizontally. Said bracesor guys 6 and7 in the construction illustrated extend oppositel from said mast and at their lower ends are raced from said car by any suitable braces, as Stand 7, respectively. At the junction of said guys with said braces are preferably mounted thereon in any suitable manner boxes or cribs X, (shown in broken lines in Fig. 1,) adapt ed to receive stone or other weights, in which further sup orted in any suitable manner by underl ing blocks (not shown) laid upon the groun or instead or in addition said guys and braces may be en ported fromthe ground by jack-screws Y, 0 any suitable construction, at the sides of the track. The lower ends of the braces or guys 8 and 9 are preferably secured to the frame of the car, near the rear end thereof,in an suitable manner; but since said mast'may braced or guye'd in various ways or b various means within the spirit and scope o m invention I do not de-- sue to be limited to t 'e exact means for'that purpose which I have illustrated; Pivotally secured to said mastinan suitable manner, as at 12, is a derrickpole or ji 13 supported at its upper end by a chain or'cable 14, secured at one end to either said pole or mast, as preferably at 14, and rove through a suitable number of sheaves or pulleys, as 15, some of which are secured to sald pole and one or'more of a cleat on said mast, as-indicated in broken lines at 14", Fig. 1, and in solid lines at 14 ing from the upper end of saidmast, thus 5 ,case said gu s, braces, and boxes when the machine is in operation will preferably be Fig. 2, by which cable the vertical angle of sald derrick-pole may be adjusted; but since said cable ma be connected said pole or mast or with said pole and some other anchorage/than said mast in a variety of ways within the spirit and scope of my mvention means .or manner shown for suchfp ose. Secured to said mast, intermediate 0 the ends thereof and preferably in a rigid mannor, as by bolts 16, is a of'any suitable construction. Cab es 17 and 18, respectivel are secured in any suitable manner to sai derrick-pole, respectivel on 'deors reader 16 opposite sides thereof, as at "17, an are to deflect the course of said cables 17 and 18,

- derrick-arm throu thus providing a greater leverage upon said said cables. A further result is to transmit through said guide a direct swinging strain upon said mast, thus avoiding some of the strain which would otherwise be imposed upon the pivot-pin of said derrick-arm. It is obvious that by slacking toward sai collar 22.

one of said cables 17 or 18 and drawing taut the other of them said derrick-arm may be swung to one side or the other, as desired. U on said derrick-pole is secured a clip 21 to w 'ch a collar 22 is pivotall secured by a universal joint of any suitab e construction, as 23. A shovel-pole 24 is loosely encircled by said collar and 18 provided at its lower end with a scoo or shovel 25, referabl'y directed car. To the orward end of said shovel is secured a crotch-line 26, to which is attached a sheave or pulley 27, through which pulley is rove a cable 28, which is secured at one end to a suitable anchora e, as at 28*, to said car, and intermediate 0 said pulley and its opposite end is carried between or partly around suitable guide-wheels, as at 28 28, and 28 and said opposite end thereof is secured to a winding-drum or windlass of any suitable construction, as to the drum 29, which may be operated by any suitable means, as by said engine 20. The en ine and said winding-drums are of we l-known construction and in common use and are not thought necessary to be herein described; nor do I desire to limit myself to any specific kind of cable-operatin means, since said cables might be operated by any one or more of a great variety of means. Secured to said. shovel is another cable 30, which is carried over a guide-pulley 30 on the upper end of said derrick-pole and thence over a guide-pulley 30 on said mast and thence under a guide-pulley 30 and secured at its opposite end to a Windlass of any suitable structure, as 31, operated by any suitable means, as b said engine. It will be obvious that by s acking both said cables 28 and 30 said shovel will drop by gravit said shovel-pole slipping'through the coll ar 22. Now by winding up the cable 28, leaving the cable 30 slack, the shovel will be drawn toward the car along the bottom of the ditch or against the bank u on which the car stands, thus securin a loa of earth or ore. As soon as the shove is filled both cables 28 and 30,

are wound up; which operate to lift the shovel, the shovel-pole slip ing through said After the shovel reaches a certain heightthat is to say, the hei ht of the pulleys 28 --said cable 28 .may e slowly unwound to permit the shovel to be raised hi her,

dlVhen the shovel has reached the desired height, the derrick pole or jib may be swun arc of which said universal joint 23 is the radial center and causing said shovel to dis charge its load. If desired, said derrick may be mounted upon a scow or other suitable support, (not shown, but the construction of which would occur to one skilled in the art and, if desired, said shovel may, as shown in Fig. 2, be turned around, so as to fill while movin away from the derrick-support, in which latter-case the closed end of the scoop or shovel will be provided with an outwardly-opening latched door 25, having a latch-releasing cord or wire 32, secured to the latch 33 thereof and carried, over any suitable purchase-point or uide-wheel 34, and thence to said car or 0t er sup ort, so that said door may be released an the load of earth dro ped through the doorway to the dump. n such case also the cable would draw the scoop in load-receiving direction as well as to dumpin position, the cable 28- only operating to raw back the shovel to the starting position and subsequently in cooperation with'the cable 30 to lift the load. Such modification will, it is thought, be ,obvious to any one skilled in the art and need not be illustrated or described more particularly. In said modified form I also prefer to furnish holddown means for holdin said shovel-pole in lowered position until t e shovel or scoo is filled. Gravity is usually sufficient for t 's purpose in either form of the device; but such additional means, which I will now describe, I believe is desirable in such modified form, at least, and may also, if desired, within the scope of my invention be added to the construction shown in Fig. 1. Said holddown means comprise a cable or equivalent flexible means 35, secured at one end to the foot of said pole by said scoop or in any other manner and thence led upwardly and partly around a guide-wheel 36, mounted on sa d collar, and thence to and several times around a drum 37, preferably mounted on said jib, and thence to and partly around a guidewheel 38, mounted on said collar, and thenceupwardly and secured at its opposite end to said pole in any suitable manner, as at 38*. Said drum may be controlled in any suitable manner; but I prefer to secure a concentric brake-wheel 39 thereto and to bend over said wheel a brake-strap 40, secured at one end, as at 40, to said jib and at its opposite end to the .toe of a bell-crank lever 41, which is pivoted at its heel to said jib, as at but not to be tipped by the cable 30.

43. To the opposite end of said lever I secure a haulin -line 44, leading toward the car, by which sai lever may be rocked to set said brake-strap in operation.

Having now described my invention, wha I claim, and desire to secure by Letters Patent, is-

1. The combination with a suitable support of a jib, a collar mounted on said jib by a universal joint, a pole directed. loosely through said collar, a shovel carried by said pole, means for lowering and raising said pole and means for swingin said pole.

2. The combination wit a suitable support of a jib carried thereby, a collar secured to said jib by a universaljoint, a pole directed loosely throu h said collar, guides mounted on said 001 ar, flexible means engagin said guides and secured to said pole and a apted to control the movement of said pole throu h said collar, means mounted on said jib an engaging said flexible means intermediate of its ends and adapted to govern the movement of said flexible means, a shovel carried by said pole, means for drawing said shovel in digging engagement with the earth, and means for swingin said shovel into load-releasing position, su stantially as described.

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

OSCAR J. OLSON.

Witnesses:

JAMES T. WATSON, WELLINGTON M. BLEWETT

Images