US1923164A

US1923164A - Code key cutting machine

Info

Publication number: US1923164A
Application number: US516292A
Authority: US
Inventors: Axel H Roos
Original assignee: Individual
Current assignee: Individual
Priority date: 1931-02-17
Filing date: 1931-02-17
Publication date: 1933-08-22
Anticipated expiration: 1950-08-22

Description

' Aug. 22, 1933. A. H. ROOS 1,923,164

CODE KEY CUTTING MACHINE Filed Feb. 17. 1951 2 Sheets-Sheet 1 Fig.6

INVENTOR A-HROOS ATTO R N EY Aug. 22, A 005 CODE KEY CUTTING MACHINE Filed Feb. 17. 1931 2 Sheets-Sheet 2 =17 Wmmr/mmrmm W INVENTOR A.HR 008 Patented Aug. 22, 1933 UNITED STATES PATENT OFFICE 6 Claims.

This invention relates to key cutting machines, and particularly to one of that character, by meansof which keys are cut from their code data when thepattern key is not available.

The principal object of the present invention is to provide a machine of this character so arranged that a key may be easily and accurately cut, and in which the extent of the different adjustnients or movements of the key supportingcarriageare controlled by factory made gauge elements. The gauge features of these elements are precalculated, and are individual to the different keys, and the operator never has to calculate the setting or adjusting of any part in order to properly control the movement of the carriage. This machine may, therefore, be successfully operated by persons who may not be expert mechanics.

A further object of the invention is to arrange the machine so that upon replacing certain parts with others, the machine may be used for key duplicating purpose.

A further object of the invention is to produce a simple and inexpensive device and yet one which will be exceedingly effective for the purpose for which it is designed.

These objectsI accomplish by means of such structure and relative arrangement of parts as will fully appear by a perusal of the following specification and claims.

In'the drawings similar characters of reference indicate corresponding parts in the several views:

Fig. lis a top plan View of my improved key cutting machine.

. Fig. 2 is ,atransverse section on line 22 of Fig. l. 1 i

Fig. 3 is a fragmentary top plan view of the machine as arranged with a gauge device to cut to a single code only. v

Fig. 4 is a similar view showing the machine as arranged for key duplicating purpose;

Fig. 5 is a perspective view of the single-code and key duplicating gauge element.

Fig. 6 is a perspective view of the depth control block for one code.

Referring now more particularly to the characters of reference on the drawingsthe numeral 1 denotes the rectangular base of the machine, on which toward the back and right-hand side are longitudinally spaced and upstanding hearing bosses 2. Turnable in ball-bearings, (not shown) supported in the bosses, is a shaft 3, on which between said bosses is a largeand small pulley unit 4. One pulley is engaged by a drive the spindle.

belt 5, which is itself connected to and driven by any suitable source of power. On the inner end of the shaft is a removable rotary cutter 6, of the usual beveled-face type used in key cutting. Upstanding from the base in front of the shaft and toward the left-hand side of the said base, are rails '7, which are disposed parallel to each and at right angles to the plane. of the shaft. Slide bars 8 are engaged with the outer faces of the rails, said bars being connected together to form a rigid unit by a flat plate 9. 0 The front and back edges of the plate are parallel to each other and to the shaft, and form guides for supporting engagement with the side rails 10 of a carriage 11. This carriage, therefore, may move lengthwise of the base on the plate 9, or it may move transversely of the base or lengthwise of the rails 7.

Mounted on the carriage in facing relation to ie front edge of the cutter is a key clamping block 12, which is preferably of the same character as that shown in my Patent, No. 1,746,499, dated February 11th, 1930. Also mounted on the carriage toward the opposite side is another removably mounted block 13, from which a horizontal pin 14 projects at right angles to the piane of the shaft 3. Removably mounted on and upstanding from the base back of the carriage is a block 15, in which a spindle 16 is clamped for longitudinal adjustment. This spindle is parallel to the shaft 3 and is on a level with the pin 14. Outwardly of the block thespindle carries spaced disks 17, which form the supporting means for a cylinder 18. This cylinder is turnably and removably mounted on the disks and is held in position thereon bya clamping screw 19, mounted on the outer end of The cylinder is provided with a plurality of different circumferentially spaced and longitudinally extending rows of holes 20. Each' row governs the spacing of the notches in a certain key and has an identifying number corresponding to that on the code card of the particular key as put out by the factory. To control the depth to whichthe key notches will be cut, I provide the following arrangement:

Projecting upwardly from the base in front of the carriage and centered between the rails 7 is a boss 21,111 which a horizontal shaft 22 is slidably but removably mounted. This shaft, which is disposed parallel to the rails '7, or at right angles to the shaft 3, is on a level below that of the plate 9 and the carriage. The shaft projects rearwardly beyond the'boss a certain distance and on its rear end is, provided with a head 23, adapted to engage a plate 24 depending from the carriage so as to limit the movement of the carriage toward the shaft 3 and the cutter. A cylindrical block 25 is removably and turnably mounted on the outer end of the spindle, said block on its face nearest the bosses having a plurality of circumferentially spaced depressions or sockets 26. These sockets are of different depths and govern the depth of the key notches to be cut as determined by the code of particular key.

-A longitudinally adjustable pin 27 is mounted in the base parallel to the spindle and projects outwardly from said base for engagement with one of the sockets 26, depending on the rota on of the block. A spring 28 on the SDllldlbCt-\VTl the head and the boss acts to hold the bio-cl: engaged with the pin.

In connection with the forgoing .rip""' the operation of the machine to cut a key will be generally self-evident. lhe key blank is clamped in the block 12, and is definitely lo" cated by a gauge member 30 pivoted on the block. When the key is thus positioned the carriage is moved along the member 9 so that the cutter is at one end or the other of the key, the pin 14 is then in line with one of the end-most holes 20 in the row corresponding to the particular code being used. The carriage is then advanced toward the cylinder so that the pin engages such hole; the block 25 is initially set to engage the pin 27with that socket 26 which will govern the of the end-most notch of the key, as determined by code card. Since the depth of the socket when engaged by the pin determines the position oi the head 23, it also determines the distance the carriage may be moved toward the edge of the cutter and consequently governs the depth oi the notch to be made by the cutt first notch has been cut, the. c Maw 11$ drawn from the cutter and shifted laterally ative thereto, so that the pin will enter the 11 hole 20. The block 25 is also pulled has clear the pin 27 and is rotated so that said will enter the next socket according to the structions on the code card. The same operations are then repeated until all the key notches have been out.

If the next key to be cut is of another code, the cylinder 18 is readjusted to line up the corresponding row of holes with the pin 14, and the block 25 is replaced by another having the necessary socket'arrangeinent to correspond to the particular code being used. It is here to be noted that the necessary supply of drilled cylinders 18 and blocks 25 are supplied by the factory along with or as accessories to the machine, and the necessary accurate gauging of the spacing of the holes and the depth of the sockets is to be taken care of at the factory.

By reason of the adjustment of the spindle l6 and its bearing, the cylinder may be correspondingly adjusted to compensate for any slight difference in the width of the cutter, such asmay be obtained when cutters changed. Similarly adjustment of the pin .27 allows the advance of the carriage, irrespective of the depth of the sockets 26, to be adjusted to compensate for slight variations in the diameter of the cutter.

If the machine is used for cutting keys to a single code only, the arrangement shown in 3, 4, and 5 is used. In this case the block 15 and the cylinder 16 are removed, the block 15 being replaced by another supporting block 31 disposed directly back of the block 13. Invertedly mounted in this block is a spindle 32, which is parallel to the pin 14 and is held against rotation from either position by a set-screw 33 in the block 31, engaging either one of opposed grooves 34 out along the spindle. The forward end of the spindle carries a flat cross-head 35, which is provided with a single row of holes 36 to be engaged by the pin 14, and being spaced according to the requirements of the particular code of the keys to be out.

If the machine is to be used for a key dupli eating purpose, the block 13 is removed and is replaced by a block 12a, which is of the same nature as the block 12, or so as to support the key 37 to be duplicated. The spindle 32 is then inverted in position, since in connection with the head 35 but in opposed relation thereto, a notch locating and gauging element 38 is formed. This element is also taper form in plan, or so that it corresponds to the cross-sectional shape of the rotary cutter. Said element and the head 35 are so arranged relative to the spindle 32 that when the spindle is turned so that the head is upper-most, said head will align with the pin 14; and when the spindle is inverted the gauge element 38 will be aligned with the key 37. Said element is also positioned so that it disposed in the same relation to the 135 key 37 as the cutter 6 is to the key blank 29a to be cut.

In order to accurately adjust the setting of the 01-21 ient 38 relative to the cutter, a set-screw 39 is mounted in the rear end of the block 31 in alignment with and bearing against the adjacent end of the spindle 32. A lateral set-screw 40 in the block 31 acts to hold the set-screw 39 undesired movement after it has been once set to position.

From the foregoing description it will be readily seen that I have produced such a device substantially fulfills the objects of the invention as set forth herein. 1

While this specification sets forth in detail the present and preferred construction of the device, still in practice such deviations from such detail may be resorted to as do not form a departure from the spirit of the invention, as defined by the appended claims.

Having thus described my invention What I claim as new and useful and desire to secure by Letters Patent is:

1. A code key-cutting machine comprising a base, a rotary cutter mounted thereon with its axis horizontal, a carriage mounted in connection with the base for movement both parallel and at right angles to the axis of the cutter independently, a key clamping block on the carriage, means on the base to adjustably limitthe movement of the carriage at right angles toward and from the cutter, a horizontal pin mounted on the carriage and extending at right angles to the axis of the cutter, and a member mounted on the base and provided with a row of holes extending lengthwise of the axis of the cutter and on a level with the pin for selective engagement with the pin.

2. A code key-cutting machine comprising a base, a rotary cutter mounted thereon with its axis horizontal, a carriage mounted in connection with the base for movement both parallel and at right angles to the axis of the cutter independently, a key clamping block on the carriage, means on 'the base to adjustably limit the movement of the carriage at right angles toward and from the cutter, a horizontal spindle disposed back of the carriage and extending at right angles to the axis of the cutter, means supporting the spindle from the base and in which said spindle is invertedly mounted, a cross-head on the forward end of the spindle, and provided with a row of holes arranged, when the spindle is in one position, to extend horizontally and parallel to the axis of the cutter, a key-notch engaging element on the forward end of the spindle arranged, when the spindle is inverted, to lie parallel to the cutter, a pin to engage the cross-head holes when the spindle is in said one position, removable means to mount the pin on the carriage, and removable means to support a key in connection with the carriage in position to engage said element when the spindle is in an inverted position.

3. A code key-cutting machine comprising a base, a rotary cutter mounted thereon with its axis horizontal, a carriage mounted in connection with the base for free sliding movement both parallel and at right angles to the axis of the cutter, a key clamping block on the carriage, means for adjustably gauging the movement of the carriage in a direction parallel to the axis 01' the cutter, a head for abutting engagement with the carriage as the latter moves toward the axis of the cutter, and means connected to the head to selectively set the same at different locations relative to and in thepath of movement of the carriage toward the cutter to correspondingly alter such extent movement of the carriage. I

4. A code key-cutting machine comprising a base, a rotary cutter mounted thereon with its axis horizontal, a carriage mounted in connection with the base for movement both parallel and at right angles to the axis of the cutter independently, a key clamping block on the carriage, means for adjustably gauging the movement of the carriage in a direction parallel to the axis of the cutter, a head for engagement with the carriage as the latter moves toward the axis of the cutter, a horizontal spindle attached to the head and extending at right angles to the axis of the cutter, means slidably supporting the spindle from the base, and means applied to the spindle to selectively control the movement of the same relative to the supporting means.

5. A code key-cutting machine comprising a base, a rotary cutter mounted thereon with its axis horizontal, a carriage mounted in connection with the base for movement both parallel and at right angles to the axis of the cutter independently, a key clamping block on the carriage, means for adjustably gauging the movement of the carriage in a direction parallel to the axis of the cutter, a head for engagement with the carriage as the latter moves toward the axis of the cutter, a horizontal spindle attached to the head and extending at right angles to the axis of the cutter, a boss on the base in which the spindle is slidably supported, a block mounted'on the spindle outwardly of the boss, said block having a plurality of sockets in the face nearest the boss, said sockets being of different depths and concentric with the spindle, and a fixed pin parallel to the spindle projecting outwardly from the boss and adapted to engage any socket to the full depth thereof.

6. A key cutting machine comprising a base, a cutter mounted on the base, a carriage mounted on the base, means to support a key on the carriage, the carriage being movable at right angles to the cutting edge of the cutter and parallel with the axis thereof to carry the key into and out of engagement with the cutter,

means to adjust the limit of movement of the carriage toward the cutter whereby to gauge the depth of the cut to be made in the key by the cutter, such adjusting means comprising a'stop on the base, a stop on the carriage spaced from the first stop, the stops being adapted to engage each other when the desired limit of movement of the carriage is reached, and means to adjust the position of one of said stops relative to the other.

AXEL H. ROOS.