DE1461715A1 - Device for clamping pencils, chalks or other writing materials, especially for sharpening machines - Google Patents

Description

UIPL-ING. DIETER 3ANDER DR.-ING. MANFRED BDNING I 4 D I / IO

PATENT LAWYERS BERtIN 35 (DAHLEM)

HOTTtNWEG 15 TELLPON 761503

218/10954 DE August 10, 1965

Patent registration of the company

FABRIQUE SUISSB DB CRAYONS GARAN D ¹ AGHB SA Geneva (Switzerland)

"Device for clamping pencils, chalks or other writing materials, especially for sharpening machines"

The invention relates to a clamping device for pencils, chalks or other writing means, in particular for sharpening machines, which contains jaws which are intended to be pressed by means of springs on the to be sharpened or to be sharpened pencil, to hold it in position » ^'l

It bind already known clamping devices of the type described, which have several jaws, which around the Pencil receiving opening are arranged around. However, these known devices are not easy to use '*

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and the clawed jaws have the disadvantage that they damage the pencil at the moment of clamping, where they also fix the pencil in the machine miss the necessary suppleness.

The device according to the invention aims to remedy the disadvantages mentioned. It is characterized by that it contains two parts which can be displaced parallel to one another in a guide housing, each of which has one at one end pivoted lever in its center point in the housing is attached, so that a movement of the egg-slidable part in a desired sense imposed a movement of the. other displaceable part causes in the opposite sense and that at least one spring is used to move the two Spread the parts apart and the inner ends of the parts each directed against the other part and have a resilient cladding supporting, lateral projection, wherein the cladding the jaws for the lead »

pin form and are arranged opposite one another, so that their opening movement by exerting a pressure on the Form of a pusher having outer ends of the parts is effected.

The accompanying drawing shows schematically an exemplary embodiment of a clamping device according to the invention. 1 is an elevation of the device, FIG. A section along the line II-II in FIGS. 1 and 3, too a section along the line III-III of Fig. 1,

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The clamping device for pencils for sharpening machines has a guide housing 1 which is set up for attachment to the sharpening machine by means of the rods 2, the are screwed into threaded holes 3 provided in the housing 1.

The housing 1 is on two opposite walls a.ii each have an opening 4. Two slidable to each other Parts 5 are arranged in the guide housing 1.

Each of these parts 5 is each attached to one end 6 of a lever 7 which is pivotable in its center in a hole 8 in the cover 9 lying behind the housing 1 is. This cover 9 is fixed to the housing 1 on the one hand by the rods 2 and on the other hand by screws 10 (FIG. 3).

. The lever 7 has a hole] 1 in the middle for the pencil to pass through. The edge 12 of the hole 11 jumps over one of the faces of the lever 7 in front and thus forms its pivot axis in the hole 8 of the lid 9 of the housing 1. The ends 6 of the lever 7 bear pivots 13, which are supported in corresponding recesses IA of each part 5 .

The inner end 15 of each sliding part 5 has a lateral projection 16 in which a dovetail-shaped Groove 17 is provided. The lateral projection 16 each Part 5 is directed towards the other part 5 and carries a flexible lining 18 which is made in the groove 17 is. These flexible panels 18, which are made of © Gussumi or another synthetic material such as nylon » form the two jaws for the pencil.

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Each displaceable part 5 also has a longitudinal groove 19 which is used to receive a helical spring 20. At the end of this tongue 20 is supported against the end 21 of the groove 19, while the other end rests in a groove 22 on one side 23 of the respective other displaceable part 5. The outer ones Ends 24 of the displaceable parts 5 are in the form of pressures and are guided through openings 4 in the housing 1.

From the drawing it is easy to see that when a pressure is exerted in the opposite sense against the both pushers 24 'or even against one of them, the movement imposed on the corresponding part 5 as a result of its presence of the lever 7 forces the other displaceable part 5 to move in the opposite direction. The jaws 18 are thus always moved symmetrically and oppositely to each other, with their opening movement by exercising a Pressure on the pusher 24 is effected. With the jaws 18 in the open position, the one using the sharpening machine If the person exerts pressure on the pusher 24, the pencil can be inserted into a hole 25 in the middle of the housing 1 as well as through the hole 11 in the middle of the lever 7. If the pushers 24 are left out, they cause Springs 20 bring the jaws 18 closer to the pencil to hold it resiliently in place without in any way closing it to damage.

The clamping device described can be made entirely of metal, with the exception of the jaws 18, which are always made of a flexible material. However

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thanks to the simple shape of the parts, especially the slidable solid parts 5, it is easily possible to do so Manufacture parts from cast material, for example by molding or pressing plastic synthetic material. The housing 1 can also be made from the same material.

It should be mentioned that the clamping device described is not only for pencil sharpening machines and for machines can be used for sharpening leads or chalk, but equally in all devices in which pencils a lead or chalk or any other writing or drawing material is to be held.

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Claims (3)

Claims 1.) Clamping device for pencils, chalks or others Writing material, in particular for sharpening machines, which has jaws which spring against the pencil to be sharpened be pressed to hold it in place, characterized in that there are two in a guide housing (l) contains sliding plates (5) which can be displaced parallel to one another, each of which at one end (6) has one at its center in the Guide housing (l) pivotally arranged lever (7) is attached, so that a movement of a sliding slide plate (5) in the opening direction due to the action of the lever (7) a movement of the other sliding plate (5) in in the opposite direction and also in the opening sense that at least one of the two can be displaced Sliding plates (5) spreading apart spring (20) provided is that the ends (15) in the guide housing (l) of the sliding plates (5) each one directed towards the other sliding plate (5) and carrying an elastic insert, have lateral projection (16) and that the elastic insert pieces as clamping jaws (18) for the pencil are formed and arranged opposite one another, wherein the 909831/0028 Opening movement of the clamping jaws (18) by exercising a the
Pressure on the / shape of a pusher, protruding from the guide housing (1) ends (24) of the sliding plates (5) can be brought about. 2. Device according to claim. 1, characterized in that the lever (7) in the middle has a hole (ll) for the pencil to pass through _f the edge (12) of the hole (ll) protruding over a surface of the lever (7) and so forms its pivot axis in the guide housing (l). " 3. Device according to claim 1 or 2, characterized in that each slidable slide plate (5) has a groove (19) in its direction of movement in which there is a spring (20), one end of which faces the end (21) ^{the groove (19) is supported, while the other end rests in a groove (22) of the end of the respective other 1} sliding slide plate (5), which end is in the form of a pusher (24), on the same side of the pusher as the associated slide plate (5) »but at a distance from diesar. 909831/002 8 Blank page