US1973803A

US1973803A - Elevating apparatus

Info

Publication number: US1973803A
Application number: US722777A
Authority: US
Inventors: John A Frauen
Original assignee: Individual
Current assignee: Individual
Priority date: 1934-04-27
Filing date: 1934-04-27
Publication date: 1934-09-18
Anticipated expiration: 1951-09-18

Description

got. 18,l 1934. J. A. FRAUEN ELEVATING APPARATUS Filed. April 27, 1954 3 Sheets-Sheet l Inventor Sept. 18, 1934. J, A, FRAUEN l 1,973,803

ELEVATING APPARATUS Filed.April 27, 1954 5 Sheefcs-Sheet 3 Q Inuenta;r

Patented Sept. 1.8, 1934 UNI'IEDI STATES vPATENT oFFlcE 2 Claims.

A still further very important object of the invention resides in the provision of an elevating apparatus of this nature which is comparatively simple inits construction, easy vto manipulate,

thoroughly eflicient and reliable in use and otherwise well adapted -to the purpose for which it is designed.

With the above and numerous other objects in view as will appear as the description proceeds, the invention consists in certain novel features of construction, and in the combination and arrangement of parts as will hereinafter be more fully described and claimed.

In the drawings:

Figure 1 is a side elevation of an apparatus embodying the features of my invention showing the same in lowered position. I i

Figure 2 is a similar view showing the same in raised position with the frame tilted.

Figure 3 is a top plan view of the frame.

Figure 4 is a top plan view of the turnable plate. 1

Figure 5 is another side elevation of the apparatus showing the frame in a different position from that shown in Figure 2.

Figure 6 is a sectional View taken substantially on the line 6 6 of Figure 3.

Figure '7 is a bottom plan view ofthe central portion of the frame.

Figure 8 is a vertical section through the pneumatic jack. f

Figure 9 is a sectional elevational view showing the top of the pneumatic jack in elevation with the central portion ofthe frame in section.

Figure 10 is a smilarview but showing the frame in horizontal position. y

Referring to the drawings'in detail it will be seen that the numeral 5 denotes a cylinder embedded in' the ground being open at the top and A closed at the bottom. A flange 6 extends outwardly from the'top of the cylinder. Numeral 7 denotes a hollowpiston of elongated construction slidable in the cylinder 5. The bottom of the piston has a central opening 8 and an off center opening 9. A pipe 10 is engaged in an opening in the bottom of the cylinder and rises through the opening 8. Numeral 11 denotes an air line valve control connected with the pipe 10. Numeral 12 denotes a head threaded in the upper 60 endof the piston 7 and having an outwardly directed ange 14 for resting on the flange 6 when the piston is in downposition. A bolt 15 is mounted in the head 12 vand rises therefrom through an opening in the-center of a turnable plate 16, ball bearings 17 being interposed between the plate 16 and the head l2. Across the top of the plate adjacent one side is a channel bearing 18 suitably xed to the plate and on the other side is a rest 19.

An elongated casing 20 is embedded in the ground in spaced coextensive parallelism with the cylinder 5 and is connected with the flange 6 thereof and has slidable thereina bar 21 the upper end of which is fixed in the flange 14. This bar 21 has a plurality of spacedopenings 22 into which a pin 23 may be projected. This forms the safety Y feature attachment. A stop collar 24'is fixed on the lower end of the bar to prevent the -withdrawal thereof accidentally 'and thereby preventing the piston 7 from being elevated out of the cylinder. A little oil is used in the bottom of the cylinder. Obviously by turning on the air the piston 'l may be, raised the desired height and by allowing the air to escape the piston gravitates downwardly and the oil'in the bottom of the cylinder acts as a check' since it must flow through the relatively small opening 9 when the bottom of the piston reaches the same. y

The frame used with the pneumatic jack just 90 described comprises a pair of spaced parallel coextensive bars 28. The central portions of the bars are connected by a plate 29 having openings 30 inV the -ends thereof. A rod 3l extendsbetween the bars 28 below the plate 29 adjacent one end. This rod 31is adaptedF to be received in the channel bearingx18. Bolts 32 may be inserted' through the openings 30 and threadedly engaged in openings 33 in the plate 16 when it is desired to maintain the frame in a horizontal position.

-If it is desired to tilt the frame as sh'own in Figures 2 and 9 then these bolts are removed. On

, one end of the -frame is anvaxle 35 with wheels 36 on the ends thereof. Chock members 3'7 are provided on the frameY one adjacent each end.v The automobile is run over the frame when in a posiloo . practice it attains the features of advantage enumerated as desirable in the statement of the invention and the above description.

It will be apparent that changes in the details of construction, and in the combination and arrangement of parts may be resorted to without departing from the spirit or scope of the invention as hereinafter claimed or sacricing any of its advantages.

Having thus described my invention. what I claim as new is:

1. In a jack structure, a liftable head, a pin rising from the head, a plate having an opening to receive the pin, ball bearings interposed between the plate and the head so that the plate may be easily turned, a channel bearing on the plate, a frame, a cross rod in the frame rockable in the bearing.

2. A jack structure of the class described including a lifting mechanism having a head, a channel bearing across the head, an elongated frame having a cross rod at one end receivable in the bearing and wheels at the other end.

' JOHN A. FRAUEN.