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168 
A Portable Crane for Vehicle Use
Page 97
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APATENTED portable crane for mounting on lorry bodies and having a number of interesting features, has recently been placed on the market by E. J. Spreadborough and Co., Watchman Works, St. Albans. The designer is, we understand, a transport user, who, having operated the crane for some time, has improved and patented the design. As will be seen from the illustration, the crane consists of a simple upright standard that may be mounted in a specially provided socket fitted in the floor of the vehicle body. The standard-
which can swivel in the socket—is made from 40-ton solid-draWn steel tube and is guaranteed to lift 19 cwt.
The winding gear is provided with a 3-to-I reduction gear for heavy loads, there being an alternative direct drive for lightweightitems. The gear is equipped with a, safety pawl in order to hold the load in any position, and to prevent it mining backwards. A safety hook is provided as standard on the' heist, hut special attachments for lifting churns, sacks, cases, or other goods'can be supplied as extras.
The work entailed in adapting a lorry to take the crane may be effected in about an hour, and consists of cutting a 4-in.-diameter hole in a suitable position in the floor of -the body. The metal socket, into which the crane fits, is then inserted and is 'held down by four bolts.
When not in use the crane is accommodated in a carrier-tube bolted to the 'underside of the body. The tube takes the weight of the outfit, and it is held in position by a swivelling fastener conveniently attached under the floor of the body.
The crane, complete with the necessary fittings, is to he sold at 212 12s. Daa