Patent GB-1165965-A (GB)
Title: Improved Orthodontic Appliance
Inventor: BEDDOW JAMES
IPC: A61C7/00
Filed: 1967-01-30
Abstract: 1,165,965. Regulating teeth. J. BEDDOW. 28 Nov., 1967 [30 Jan., 1967], No. 4364/67. Heading A5R. An orthodontic appliance comprises a dental base-plate (which is adapted to be located firmly in a patient's mouth lingually of a row of teeth therein) and one or more adjustable sþrew-actuable pressure-applying means each adapted to apply corrective pressure to one of said teeth, each pressure-applying means including an internally screw-threaded openended tube bonded into the base-plate so that the tube ends remain open and the outermost tube end is directed towards the tooth to be treated when the base-plate is located as stated above, an externally screw-threaded grubscrew having an axial bore extending therethrough, which grub-screw is arranged for adjustable screwed engagement in the tube, and an elastic buffer member engageable in one end of the grub-screw bore, to project from the outermost tube end for contact with the tooth, the grub-screw at the opposite end of the bore being accessible through the inner tube end for engagement by a turning tool. As illustrated in Fig. 1, the screw-actuable pressure-applying means comprises an externally screw-threaded grub-screw 1 having an axial bore 2, at one end of which is a portion 4 of reduced diameter which is preferably hexagonal in cross-section to receive screwdriving or key means (not shown). Adapted to be received in the bore at the end 3 of the grub-screw is the shank 7 of a buffer member 5 having a domed head adapted to engage a tooth; the buffer member may be made of rubber. The grub-screw is adapted to be received by an internally screw-threaded tube 8 made of a material, for example an acrylic resin, which will bond or can be bonded with an orthodontic base-plate made of conventional material Fig. 3, illustrates the application of pressure to a tooth 9 by the buffer member of the screw-actuable pressure-applying means, the internally screw-threaded tube of which is bonded in an orthodontic baseplate 10 provided with wire finger springs 11 to anchor the base-plate to other selected teeth. A method of manufacturing the orthodontic appliance is described with reference to Fig. 5 (not shown). 1,165,990. Track-set. YONEZAWA TOYS CO. Ltd. and RAPHAEL LIPKIN Ltd. 15 July, 1968 [14 July, 1967], No. 33685/68. Heading A6S. A track set comprises .rectangular and right isosceles triangular track units, 11 and 12  respectively, on which means 17 are provided for guiding a toy vehicle, the sides of the triangular track units adjacent to the right angle are equal in length to one side of the rectangular track units, means 13 and 14 are provided to interconnect the track units with the sides of equal length in contact so that the guiding means form a path 15 and 16 along which the toy vehicle may travel. Each track unit may be provided with guiding means forming two distinct paths. The means 13 and 14 may be one or more cooperating pairs of dove tailed projecting portions and complementary shaped recess portions provided respectively on two track units. At least one of the track units may have one or more holes 25 in which an accessory can be mounted. The rectangular track, units may have adjacent sides equal in length. The track units are preferably formed of a synthetic resin.