US2465796A - Lifting device for aircraft batteries - Google Patents

Description

LIFTING DEVICE FOR AIRCRAFT BATTERIES Filed Feb. 11, 1947 2 Shets-Sheet l March 29, 1949. (5. B. FREEMAN 2,465,796

' LIFTING DEVICE FOR AIRCRAFT BATTERIES Filed Feb. 11. 1947 2 Sheets$heet 2 fieemiz 5 vrueufoz Patented Mar. 29, 1949 UNITED STATES PATENT OFFICE LIFTING DEVICE FOR AIRCRAFT BATTERIES 1 Claim. 1

This invention relates to an aircraft battery lift, the primary object of the invention being to provide a wheel-supported carriage on which a tilting boom is mounted, so that when a battery has been elevated to the desired position on the boom, the boom may be tilted to move the battery close to the fuselage of the airplane, to permit the battery to be readily and easily transferred to the airplane.

Another object of the invention is to provide a device of this character having a vertically movable carriage operating over the boom, together with a mechanically operable means for raising and lowering the carriage, to accomplish the purpose of the invention.

With the foregoing and other objects in view which will appear as the description proceeds, the invention consists of certain novel details of construction and combinations of parts, hereinafter more fully described and pointed out in the claims, it being understood that changes may be made in the construction and arrangement of parts without departing from the spirit of the invention as claimed.

Referring to the drawings Figure 1 is a rear elevational view of a battery lift, constructed in accordance with the invention.

Figure 2 is a sectional view taken on line 2-2 of Figure 1.

Figure 3 is a vertical sectional view through the platform of the wheel-supported carriage.

Figure 4 is a sectional view taken on line 44 of Figure 3.

Figure 5 is a sectional view taken on line 5-5 of Figure 4.

Referring to the drawings in detail, the device comprises a wheel-supported platform 5 which is formed with an elongated opening 6 therein, through which the boom 1 extends, the boom 7 being pivotally mounted on the bracket 8 which extends downwardly from the under surface of the platform, as clearly shown by Figure 1 of the drawings.

This bracket 8 provides a pivot for the boom which is spaced an appreciable distance above the lower end of the boom, where the link 9 connects with the boom, through the medium of the ears III that extend from the boom.

The link 9 connects with the lower end of the lever H which is pivotally connected to the frame I2 of the carriage, at 13, so that by moving the lever, the boom may be tilted from the full line position as shown by Figure 1 of the drawings, to the dotted line position,

The boom embodies a channel bar in which the chain l4 operates, the chain being of the endless type and operates over the sprockets l5 and I6 disposed at the ends of the boom.

The sprockets l5 and I6 operate in bearings H which may be welded to the boom 1 as shown.

The reference character [8 indicates a carriage which includes a main section I9, to which the rollers 26 are connected, the rollers 20 operating against the inner surfaces of the channel bar, as shown by Figure 4. It will, of course, be understood that the ends of the chain are connected to this carriage I8, so that as the chain operates over the sprockets, the carriage It will be moved longitudinally of the boom.

At the upper end of the carriage I8, is a frame 2|, in which a battery may be positioned for support. The structure of the frame is such that a battery positioned therein, will be held against displacement.

Secured to the boom 1, at a point in proximity to the operator, is a gear housing 22 in which the sprocket 23 is mounted, the sprocket 23 lacing with the links of the chain l4 in such a way that as the sprocket 23 is rotated the chain will be fed over the sprockets at the upper and lower ends of the boom.

A gear indicated at 24 is also mounted within the gear housing 22, the gear 24 being operated by means of the crank handle 25.

It might be further stated, that the carriage proper, or main support of the device, includes a front wheel 26 and a tongue 21 whereby the carriage may be moved from place to place and guided in its movements.

The platform 5 also provides a support for batteries which may be placed thereon and transported from place to place.

In the use of the device, a battery to be elevated to the fuselage of an airplane, is positioned within the frame 2|, and the gearing is operated to move the chain l4, and consequently the carriage I8, to the proper height.

Assuming that the battery has been elevated to its proper position, the lever II is operated, tilting the boom to a position adjacent to the fuselage of the airplane, where it may be readily and easily removed from the carriage l8, and positioned, within the airplane.

What is claimed is:

A lift of the class described, comprising a platform, a vertical boom rising from the platform, the boom comprising a channel bar providing parallel track surfaces with sprockets adjacent to the ends thereof, a carriage including an elongated main section, pairs of rollers mounted at the ends of the main section and operating on the parallel track surfaces, a portion of the carriage extending an appreciable distance above the upper end of the main section of the carriage providing a supporting arm, a carrying frame forming a part of the carriage and being extended laterally from the supporting arm thereof, an endless chain operating over the sprockets moving longitudinally of the boom between the parallel track surfaces, and being connected to the carriage, whereby movement of the chain longitudinally of the boom raises and lowers the carriage, and means for operating the chain.

GEORGE B. FREEMAN.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS OTHER REFERENCES Sr. No. 340,618 Magni et al. (A. P. C.) Pub. June 14, 1940.

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