IL26059A - Cog-wheel - Google Patents

Description

FISCHER This invention relates to a toothed gear and especially to a gear wheel consisting of synthetic plastics material and intended for use in a constructional the gear wheel adapted for interlocking engagement with component parts of the The present invention provides a gear wheel of which one fla side face incorporates gear said wheel further for interlocking engagement with moving pegs projecting from a flat side face thereof and bores extending into a flat side face The hub of the gear wheel may be of known type consisting of two parts which can easily be and are provided with mating conical surfaces allowing the hub to be connected loosely or firmly to a according to how firmly the screw is The gear wheel may have spur teeth at its peripheral the said teeth on the side face thereof comprising a crown of contrate gear teeth recessed into the surface of the so that an angled transmission results when this gear ring meshes with another toothed Preferably the said pegs which serve as a coupling means for rotating parts to be attached to the toothed gear are provided on the surface opposite the crown of contrate Suitable bores provided in the flat surface of the toothed gear can receive bearing advantage of the proposed arrangement consists in t fact that a toothed wheel designed to work as a spur gear can also be used as an by making use of Its inner contrate gear Another advantage is the fact by virtue of the pegs on the face opposite the contrate teeth moving rotary elements such as pulleys may be attached to the toothed simply by being plugged into pins may be plugged into the bores provided on the flat surface of the toothed for example to form a bearing for a brick used as a connecting The invention is illustrated by way of example in the accompanying in 1 is a plan view of a flat face of a toothed gear 2 is an elevation of the toothed gear wheel with a crown of teeth shown in engagement with another toothed gear wheel to form an angular and 3 is a section of the toothed gear wheel fixed on a the gear wheel having a connecting rod bearing for a brick plugged into a bore Referring to the a toothed gear 2 is provided with spur teeth and a winged hub component 4 is attachable into the central aperture thereof in known In order to use the toothed gear 2 for an angled example by coupling with a second toothed gear 5 in the manner shown in a crown of teeth 6 within the boundary of spur teeth 1 is BO recessed into the plane surface of the toothed gear that the teeth of the crown do not project beyond the plane surface of the toothed gear The toothed gear 2 also on the face opposite the crown of teeth pegs 7 that can be plugged into The toothed gear 2 is also provided with bores 10 in which bearing pins of moving parts may For example in 3 a pin plugged into the bore serves as a connecting rod The connecting rod here is a brick 12 with recessed grooves in which the bearing pin An important eature the that the brick 12 is here correctly guided by the plane surface of the toothed gear without being impeded by the crown of gear teeth since the latter is recessed in the same insufficientOCRQuality

Claims (5)

1.: A gear wheel of which one flat side face incorporates gear teeth, said wheel further having, for interlocking engagement with moving parts, pegs projecting from a flat face thereof and bores extending into a flat side face thereof.

2. A gear wheel as claimed in Claim lf having spur teeth at its peripheral edge, the said teeth on the side face thereof comprising a crown of contrate gear teeth recessed into the surface of the wheel.

3. A gear wheel as claimed in Claim 2, in which the said pegs are provided on the side face opposite that having the crown of contrate gear teeth.;

4. A gear wheel as claimed in any one of Claims-1 to 5, in which the said bores form bearings for rotary connecting pine,.;

5. A gear wheel substantially as described herein with reference to the accompanying drawings. For the Applicants DR. RBIKHOLD COH M) PARTNERS By: ISse