US1480738A - Magnetic counter - Google Patents

Description

C. H. VEEDER MAGNETIC ACOUNTER Filed Aug. 14. 1922 2 Sheets-Sheet l El' 9 d) C fw @91 .9 d) l f/S WITNESS M BW Jan. 15, 1924.

C. H. VEEDER MAGNETIC COUNTER Filed Aug. 14. 1922 2 Sheets-Sheet 2 Wl TNESS aww Patented Jan. 15, 1924.

' vUNITED STATES 1,480,738 PATENT OFFICE.-

CURTIS HUSSEY VEEDER, 0F HARTFORD, CONNECTICUT, ASSIGNOR TO- THE VEEDER MANUFACTURING COMPANY, 0F HARTFORD, CONNECTICUT, A CORPORATION 0F CONNECTICUT.

MAGNETIC COUNTER.

Application filed August 14, 1922. Serial No. 581,693.

To all whom, it may concern:

Be it known that I, CURTIS HUssEY VEEDER, a citizen of the United States, residing in Hartford, in the State of Connecticut, have invented certain new and useful* Improvements in Magnetic Counters, of which the following isfwa specification, reference being had to the accompanying drawings, forming a part hereof.

For many purposes, such as the counting of sheets of paper as they issue from a cutter or from a press, counters actuated through the closing of an electric circuit 'commend themselves because of the responsiveness of the circuit closing devices to the slight force of the moving object. On the other hand such-counters, as heretofore constructed, have failed to give complete satisfaction in some cases because of the relative sluggishness of movement f of the electromagnetic devices energized by the closing of the circuit and depended upon to operate the counting mechanism. The core of a solenoid, for example, is relatively slow in starting its movement because of its own inertia which must be overcome. Moreover, since the movement of the solenoid is a sliding movement the friction to be overcome results in sluggishness of movement. Furthermore, when the core of a solenoid has been set in motion its "own momentum sometimes brings about an overthrow of the counting mechanism. Since magnetic counters are often desirable when the speed of counting is great, a speed of more than one thousand counts per minute not being unusual, the sluggishness referred to is particularly undesirable. In the effort to overcome the sluggishness of magnetic counters it has been found that an electromagnetic device vhaving an oscillating armature can be made very lively, that is free from sluggishness, iii operation, especially :when the spring tensiom which tends to return the armature to its initial or zero position, is properly applied to the armature land the armature is properly supported in relation to the held of the'iiiagnets and the mechanical devices through which the movement of the armature is inade to operate the counting mechanism, are properly constructed, while the tendency of the rapidly oscillating armature to cause an overthrow of the counting mechanism is counteracted by `a proper construction of the transmitting mechanism.

The present invention is intended to overcome the diiculties heretofore found to be incident to the use of magnetic counters and is concerned particularly with the mounthereinafter with reference to the accompanying drawings in which it is illustrated as embodied in a suitable form of the structure, and in which-l Figure l `is a view in vertical, longitudinal section of a. counter and its lelectromagnetic actuating mechanism which embodies in suitable formthe several features of improvements to be described.

Figure is a view of the same in horizontal section on the plane indicated on the broken line 2-2 of Figure l, looking in the direction of the arrows.

Figure 3 is a View of the same in elevation as seen from the right hand in Figure l, with the end plate of the casing removed.

Figure 4 is a View in vertical, transverse section on the plane indicated by the broken line 4-4 of Figure l, looking in the direction of the arrows.

In the construction illustrated iii the drawing the laminations a of the iield magnets are forced under high pressure .into the brasshshells b. and are held therein under compression by the brass end pieces c which are' soldered into the shell, long rivets or rods a being also passed through the laminations and the end pieces and having their ends upset in the end pieces so as to insure the lmaintenai'ice of/the laininations under compression. End shell plates or thimbles d, soldered into the shells b, have tapped into them bolts e which receive intermediate nuts e to bear'against the end frame plates f and terminaly nuts c2 which; bear against the casing end platesg which are properly fitted to the ends ofthe main casing g. Other bolts e3, in the upper part of the casing, run through both end plates g and support the counting mechanism which is made up as usual of a succession of number wheels i',

@E ifi-sones of ordinary construction, as indicated at 8, by which the complete rotation of each number wheel effects a step by step advancev .A 7c which 1s mounted in suitable bearings provided therefor in the end frame plates f, and the armature plates mounted on the shaft and secured by nuts 7a2. rl`he shaft has a preferably rectangular bo-re 7a3 to receive a flat torsion spring Z1* which is co1'- rugated at one end, to engage the bore of the shaft, and at the other end, as at k6, is bent to engage a slotted plate k7, which may be held adjustably against the frame plate f by a bridge piecelc8 secured to the frame plate by screws 7c", the rotation of the plate 707 inl one direction or the other serving to adjust the tension of the torsion spring.y

To the end of the shaft la is clamped adjustably, as at Z, one arm Z of a toggle lever Z, Z2, the -arm Z2 being pivotally connected to an oscillating` pawl frame Z4' which is mounted concentrically with the shaft i7 and carries spring pressed pawls Z5 for co-operating with a ratchet wheel 719 in co-operative relation with the first number wheel il. A

hold pawl Z6 is also provided Lfor cooperationv with the ratchet wheel to preventl backward movement thereof. Buffers J7 are secured to 'the supporting frame to cushion the arrn Z in its oscillations. It will be observed that the provision of the toggle lever between the oscillating armature and the counting mechanism insures the slowing of the movement of the pawl frame as the armature approaches the limit of its movement so that the tendency of the counting mechanism to overthrow in the rapid movement of 'the armature is counteracted.

Suitable binding posts are provided, as :it m, m. for the usual electrical connections. The circuits are arranged as usual in devices of this general character and need not be illustrated or explained herein.

It will be understood that various changes in details of construction and arrangement can be made to suit different conditions of use and that, except as indicated in theaccompanying claims,l -the invention is not limited to the particular construction and :irrangeinint shown and (lesci'iiied licrein.

I claim as my inventioi:

l. A magnetic counter comprising counting mechanism, an electromagnetic actuating mechanism having an oscillating armature, and operative connections between the armature and the counting mechanism including a toggle lever. 'i

2. magnetic counter comprising counting mechanism, an electromagnetic actuating mechanism having an oscillating armature, an arm secured to the armature, a ratchet wheel in operative relation with thc counting mechanism, a swinging pawl frame and a second arm connecting the iirst named arm to the pawl frame and constituting with the first named arm a toggle lever sys-- tem.

3. A magnetic counter comprising counting mechanism, an electromagnetic actuating mechanism, a ratchet wheel in operative relation with the counting mechanism, a swinging pawl frame, anda toggle lever connection between the actuating mechanism and the pawl lframe.

4. A magnetic counter comprising counting mechanism, an electromagnetic actuating mechanism having an oscillating armature with a shaft having a rectangular bore, op-

erative connections between the. armature and the counting mechanism, and` a torsion spring within the shaft and having'one end corrugated for engagement with the shaft and the other end secured to a relatively -Xed point.

5. A magnetic counter comprising count;

ing mechanism, an electromagnetic actuating mechanism having an oscillating arma-- ture, with a shaft having a rectangular bore, operative connections between the armature and the connecting mechanism, a supporting frame, a. slotted rotarily adjustable plate clamped to the supporting frame, and a torsion 4spring having one end`corrugated to engage the armature shaft and the other end bent to engage the slotted plate.

This specication signed this 7 day of August A. D. 1922.

Hoiinris HiissEYvEEDi-in.

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