US1371293A - Shoveling and loading machine - Google Patents

Description

J. C; BRACKETT.

SHOVELING AND LOADING MACHINE. APPLICATION FILED MAY15| 1917. RENEWED JAN. 13.1921. 1,371,293.

Patented Mar. 15, 1921.

- C/IVVENTOR Afro/m5 WITNESSES. 4/7.

UNITED STATES PATENT: omce.

JOHN .c. BRAGKE'IT, or MILWAUKEE, WISCONSIN, ASSIGNOR T0 MIDDLEMISS Aim IBRACKETT, or MILWAUKEE, WISCONSIN, A eomm'mnnsmr COMPOSED or BRUCE A. MIDDLEMISS AND JOHN C. BRACKETT.

SHOVELING AND LOADING MACHINE.

Specification of Letters Patent. Patented M 15 1921 Application filed May 15, 1917, Serial No. 168,689. Renewed January 13, 1921. Serial No. 437,128.

To all whom it may concern:

Be it known that 1, JOHN C. BRACKETT, citizen of the United States, residing at Milwaukee, in the county of Milwaukee and State of Wisconsin, have invented certain new and useful Improvements in shoveling and Loading Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to loading and shoveling machines of a type adapted to handle quickly detached masses of material individuall nage. n this class of machine it is necessary to construct apparatus which can read-' ily be moved, and which is lightand powerful in its action.

p The particular type of machine illustrated employs tail rod construction for the motions auxiliary to the digging strokfe,

v and is generally of the single cylinder overhead swinging type subject, however, to the obvious alternatives of design which I- will I enumerate in the following. This type of shovel, while it is designed for manual operation, can obviously be made automatic in its action.

My invention has for its object the construction of a shoveling machine employing a powerful digging cylinder which may be combined with an auxiliary cylinder for breaking the shovel upward vertically from its pile of material subsequently to the diggin'g stroke. This auxiliary lifting motlon may also be accomplished by a simple linkage.

A further object is the designing of a loading machine primarily adapted for overhead delivery into a car directly in line with the principal axis of the machine, but which is readily adaptable by giving a lateral inclination to the main bearings of the machine to load cars on a parallel track alongside of the machine.

A further object of my invention is to provide a reciprocating cylinder type of machine adaptable for doing work exclusively by means of a single cylinder, or

which may for heavy work be operated by a heavy cylinder which reciprocates the shoveling element, and finishes the overhead transferring movement in combination small but of large aggregate tonwith an auxiliary cylinder which assists the early stages of the lifting stroke.

It is obvious that automatic operation of" ing, more or less diagrammatically, a suitable embodiment of the invention,

F1gure l is a side view of the loadlng machme 1n the lowered or digging position.

Fig. is a diagram of the apparatus 1n the raised or discharging position.

Fig. 3 indicates the necessary air or steam piping for actuation of the reciprocating elements. g i

Referring to the drawings, 1 is a bucket or shovel mounted on a piston rod 2 which is rigidly connected to a piston 3 operating in an air'or steam cylinder 4; at the rear of the cylinder a tail rod 5' equipped with a buffer plate 6 is arranged to coact with a curved parabolic "guide 7 through the medium of an anti-friction roller 8. The cylinder 4 is pivotally secured to the steel frame of the machine by pin 9 supported on a steel structure 10 which forms part of the truck frame 11. The truck frame is mounted upon wheels 12 arranged for transportation on. the standard narrow gages prevalent in underground mining.

With the machine in the lowered position,

raise cylinder 4 and shovel 1, verticallythrough a small travel sufficient to break the1 shovel loose from the ,pile of the materia v Air is then admitted to the front of the shovel, and at the same time the air presrod 5.; Guide 7 is constructed so as in all positions of the cylinder 4 to offer a resisting surface normal to,the center line of tail rod 5 thus it will be seen that continued rearward motion of piston 3 results in a steady backward andtoverhead motion of the shovel 1 until the vertical position, shown in Fig. 2, is reached.

At this point pad 16 on cylinder 4 comes into contact with spring bumper 17 mounted on frame 10 effecting a cushioned'stop of the "travel of the cylinder whereby its contents 1s discharged into chute 18 thence into car 19. As the center of gravity of cylinder 4 and its adjoining mechanism is well outside of pin 9 release of the air pressure between piston 3 and the cylinder head adjacent to the shovel now permits cylinder 4 to drop back into the horizontal position, the rate of its drop being regulated by the suddenness with which the air pressure is released. When the piston and shovel have traveled about half of the stroke forward the cylinder 4 will again have resumed its normal horizontal position, air in the meantime having been released from cylinder 13 permitting piston 15 to drop back to its lower position. Admission ofair to the lefthand side of piston 3 and release of air pressure on the other side of the said piston now causes shovel 1 to repeat its diggin stroke.

At 20 I have in icated a link which for 1i ht work may be used to replace the action 0 cylinder 13 as a means for assisting the initial lift of the shovel away from the material. Link'2O is pivotally mounted at 21 an appreciable distance below the center line of piston 2. Retraction of piston 2 and shovel '1 beyond a point where the shovel en-.

gages the outer extremity of link 20 generates a turnin moment around pin 21 serving to assist t e initial lift of the shovel.

Referring to Fig. -3-- in which are illustrated the necessary air or steam connections for actuation of the cylinders 22 is a source of supply for fluid pressure 23 and 24 the housing and plug respectively of a standard four-way cock which controls the inlet and exhaust-connections to the c linder 4. With the plug in the position s own air 'i'sadmitted from pipe 22 through port 25 and pipe 27 to the forward end of the cylinder, the rear end of the cylinder in the meantime being connected through pipe 28 and port 26 to the atmosphere.

Rotating plug 24 ninety degrees clockwise connects the rear end of cylinder 4 to and port 25. 29 and 30 are the plug and casing respectively of a three-way cock op-' erating auxiliary cylinder 13. L With the plug in position shown fluid pressure is admitted to the bottom of cylinder 13 through pipe 22, port 31 and, pipe 32. With plug 29 rotated ninety degrees anti-clockwise cylinder 13 is connected free to theat'mosphere through pipe 22and port 31.

I claim asmy invention:

1. .A' shoveling machine including a pivotally mounted cylinder, a" piston therefor, a shovel adapted to be reciprocated by the piston, a rigid parabolic guide disposed opposite one end of the cylinder, and a reciprocable element associated with the said cylinder and the said guide and adapted to be actuated by the piston as the latter moves in.

-a shovel adapted to be reciprocated" by the piston, a rigid parabolic guide disposed opposite one end of the cylinder, and a reciprocable element associated with the said cylinder and the said guide and adapted to be actuated by the piston as the latter moves to retract the shovel for effecting a swinging movement of the cylinder to effect delivery of load from the shovel.

3. A shoveling machine comprising a carriage, a motive element pivotally mounted thereon, a reciprocable element adapted to be actuated bysaid motive element, a shovel earned by sald reciprocable element and adapted to be projected into the pile and retracted therefrom when loaded, a fixed uide element, and means associated with sai reciprocable element for converting retractive movement of said shovel intoswinging movement thereof to load delivery position.

4. A shoveling machine including a shoveling element,-arranged for reciprocation b a fluid-actuated piston, a piston rod, a cy inder casing, an auxiliary piston rod, and

means whereby the said piston coacts with the said auxiliary piston rod to modify the reciprocatlve action of the shovel.

5. A shoveling machine including a shov eling element, arranged for feciprocation b a fluid-actuated piston, a piston rod, a cy inder casin an auxiliary rearwardly extendmg ro and means whereby the said piston coacts with the said auxiliary piston red tci modify the reciprocative action of the s We 6. A shoveling machine including a shov-i 'eling element, arranged forreciprocation by a fluid-actuated piston, a piston rod, 9.

cylinder casing, an auxiliary piston rod, a

stationary guide therefor, and means whereby the said piston coacts with the said auxiliary piston rod to modify the reciprocative action of the shovel.

7. A shoveling machine including a piv- 1 otally mounted cylinder, a piston therefor, a

shovel adapted to be reciprocated by thepiston, means associated with the cylinder and piston for resisting movement of the piston in one direction whereby to cause the cylinder to swing pivotally during .said

movement of the piston, said means adapted to efi'ect movement of: the piston in the opposite direction as the cylinder returns to 15 JOHN 0. BRACKETT.

Witnesses i M. M. BoYLE, C. L. BALDWIN.

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