US1086883A - Key duplicating and recording machine. - Google Patents

Description

H. D. BARRETTXD M. ALDRICH. KEY DUPLIGATING AND RECORDING MACHINE.

APPLICATION FILED AUG.28,1913. 3 5085 8330 Patented Feb. 10, 1914,

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l/VVE/VTOHJ HA'I'PRY D. BARRETT MAXWLL flLDH/Cf/ ATTORNEYS cairn srarns re rain HARRY BENTON BARRETT AND MAXWELL ALDRICH, OF TUCSON, ARIZONA, ASSIGN- UFKQB OBS OF- ONE-HALF T0 FREDERICK C. TATUM AND TOM K. RICHEY, BOTH OF TUCSON,

ARIZGNA.

KEY IOUYLICATING AND RECORDING MACHINE.

Specification of Letters Patent.

Patented Feb. 10, 1914.

Application filed August 28, 1913. Serial No. 787,075.

1'0 all whom it may concern.-

Be it known that we, HARRY Dnnron BAP.- nn'rr and MAXWELL ALDRICIL citizens of Tucson county of Pima, and State of Arizona, have jointly invented certain new and useful Improvements in Key Duplicating and Recording Machines, of which the following is a specification.

Our invention relates to a machine for duplicating keys of various makes, which is provided with means enabling the opcrator to record the position and dept-h of the wards or notches in any key and at any time thereafter reproduce or duplicate the key from the record. ()ur machine is particularly adapted for duplicating flat or corrugated keys of any of the well known makes.

The object. of our invention is to produce a machine with which it is possible to exactly duplicate a key either while the origi nal key is in the locksmiths possession or at any time thereafterfrom a cipher record made from the original key which record may remain on tile with the locksmith for safe keeping". This is an important consideration, in that it frevpiently happens that the key or keys for a certain lock become lost or mislaid. in which case the locksmith can readily duplicate the key from the cipher-record ot the key he has on tile. Furthcriifore it would be a simple matter oi precaution for one having, keys that are liable to require duplication to previously take thcui to a locksmith having one of our niachincs and have him make and file away cipher records ol. the keys so that duplicates thcrcot may be. obtained at any future time.

A. further object is to so construct the machine that the records taken therefrom and dupli ate keys made upon the machine from such records. will be accurate and rcliable.

With these. objects iii-view our machine simple in construction and positive in action. readily and reliably adjusted and contains few or no parts liable ur' become disarrangzcd or require careful attention.

As illustrative of our invention we have shown, in the accompanying drawings, one form of machine for carrying out the above objects.

Figure 1 shows a longitudinal section and partial elevation of our machinb; Fig. 2 is.

top plan mew; Fig. 3, shows parts ack of section line 33 of Fig. 2 and Fig. 41 is a cross-secti0n on line H of Fig. 2.

In machines of this character a tile is usually used for cutting the wards or notches in the key and in the form of device shown, we preferably employ a circular file 1 which is mounted upon a shaft 2 and revolubly supported in bearings 3 and d which are secured to abase 5 in any suitable manner. The file or cutting wheel may be power driven in any suitable or preferred manner and is here shown as driven by a crank. The end of the shaft- 2 is fitted with a beveled gear 6 which meshes with a similar beveled gear 7 secured to a transverse shaft 8 and is adapted to revolve in suitable bear ings 9 and 10 secured to the 5. The forward end of the shaft. 8 is provided with a spur gear 1'1 which is adapted to mesh with a pinion 12 secured to a crank shaft 13 to which the crank handle 11 is secured in the usual or any prefcrredmanner. EX- tcndingr across the machine abovethe file wheel is located a rocker bar 15 which may be of any preferred construction, but is pref erably titted near the left end thereof, as

shown in Figs. 1 and 2, with a key holding.

cylinder 16 adapted to hold a key 17 or a key blank to be converted into a key. ihe let't cud of the rocker bar beyond th holder is provided with a plunger 18 which is spring pressed by a spring 19 as indicated in Fig.1. The portion 15 of the rocker bar carrying the spring plunger is preferably hinged at 20 so that it may be swung upward to the position indicated by dotted lines in Fig. 1 so that the key or key blank may be readily inserted. As our machine is intended to duplicate keys of various styles,

we have preferably shown the key holder 16 as reinovahly secured in the end of the rocker bar 15, so that key holders adapted to hold other styles of keys than the one shown in the drawings may be inserted. This is provided for by fitting the end of the rocker bar 15 wit-ha hole adapted to take the key holder cylinder 16 therein. a pin 21 being inscrtcdthrough the rocker bar into the tube .16 and thereby holding the same securely in place while in use.

In order that the key or key blank 17 may be properly positioned with respect to the tile wheel 1, the rocker. bar 15 is longitudinally movable and may be rocked in the plane of the key in order to determine the depth of the wards in the key, the longitudinal motion of the rocker bar being necessary to position the key in accordance with the several notches or Wards therein andj also when reproducing corresponding words 1 in a key blank. The rocker bar is provided with side bars 22 which ride on a pin i or su 'iporting rod 23, which is preferably mounted in a bracket or brackets 24, secured to the base 5 of the machine. The rocker bar by this means is enabled to slide longi tudiually and rock over the bar 23 in the manner previously described. The left end of the rocker bar is preferably guided in a suitable manner as by the bracket 25 which extends over the rocker barand assists in securing and guidingthe same. The rear end of the rocker bar may be guided by a similar slotted plate or bracket 26 which as shown is secured to supporting blocks 27 which are secured to the base 5 of the machine and are adapted to support and guide some of the parts thereof.

It is desirable in duplicating keys to have the posit-ion of the wards or notches accurately placed in conformity to the orig inal key and as the position of the wards ma y vary slightly with reference to the key step, we have provided special means for 'n-operly adjustingthe gage which is adaptl to determine the position of the wards. this purpose the right end of the rocker r 15 is preferably provided with a hole 28 which is fitted a tubular gage 29 which is j ovided at 30 with a plurality of holes spaced apart to correspond with the distance between the wards of the key. One end of the tube 29 is fitted with a. threaded plug 31 in which a screw or bolt 32 takes for the purpose of adjusting the position of the gage tube 29 relative to the key or key hold-.

ing device in the opposite end of the rocker The screw 3:? is adapted to be readily turned to adjust the gage by means of a urled head 33. An adjustable pin 34 is tioned above the line of holes 30 in the 29 and adapted to enter the holes the rocker bar 15 when it is rocked to bring the key or key blank into engagement with the tile wheel 1. The pin 34 is preferably made adjustable up and down by threading the upper portion thereof and providing it with a knurled head 35 and lockout 36 for securing it in any adjusted position. The; pin 34! is held in proper cooperative position by being passed through a threaded hole in a bar 37 which is secured to-and supported on the top of the brackets 27 as shown in Figs. 1 and 2 of the drawingsl It will be seen that when the pin 34: enters the first hole 30 in the gage tube '29 the first notch or ward of the key should be accurately positioned over the file Wheel 1. and can thus be positioned by turning the screw in the proper direction. This will give the position for the first ward and the spacing oi the sumremling holes in the gage tube 25) will accurately locate the mic-eroding wards of the key.

As previously explained it is desirable to be able to duplicate a key without having the key to copy and our machin is adapted for this purpose by providing the and ot' the tube 29 with a pin t whirl: is adapted to actuate a pointer 35 secured to a lu'acket 40 carried by the rocker bar l .7 as shown in Fig. 1 of the drawings. A imii iiorating scale 41 is secured to the upper. end of the bracket 40 and is graduated in any suitable manner so that the locksmith can readily determine the position of the first ward. in a given key and make a record thereof and t'rom that record he enabled to duplicate it at any tiuiethereaftcr. The position of the pointer 39 on the scale 41 will readily determine the distance between the ll1r-t hole 30 of the gage and the first ward of the key.

The next ini 'iortant nieasureineiit to be determined in duplicating any key is the depth oi the wards in the key. in our machine this is readily obtained by r ckiugthe rocker bar 15 and suitably nil-nearing or recording the rocking motion a cording to the depth of the res native wards of the key. For accurately indicating llllfi roeki-u motion and hence the depth of the wards. the right end of the rocker bar 15 is provided with a plate or smooth surface t2 which is:

adapted to contact with a suitable rot-k arm I 43 extending from a rock shaft it. which. as indicated in the drawings. is located above the right end of the rocker bar 15 and pivotally mounted in bearings: 45 HEfII L l t the supporting blocks Q7. The rock 't't -'ll is provided with a depending crank arm 46 which, as indicated in Fig 2 and 1",. is connected by means of a link 47 with a pointer 48 pivoted at 4%) in any suitable manner. The pointer 48 is preferably mounted to move over a scale 50 carried by a bracket 51 secured to and extending: above the base substantially as indicated in the drawings. The lower end of this scale bra ket i: hown as provided with a bearing l)l1l('l\'tt .32 which, together with the scale bracket. forms a bearing support for the pivot '5) of the pointer 48. The pointer 48 is represented as counterbalancwl by the weights .73 secured thereto below the pivot point ill The pointer is preferably spring pressed toward the left as indicated in Fig. 2-3 of the drawings, so that the pull on the link t? will, through the rock arm l6 and the rock shaft 44, keep the point of the rock arm 43 in contact with the plate 42 on theend of the rocker bar 15. A spring 54 is provided for thus purpose and when the rocker bar 15 is up out of use the pointer would normally stand at the dotted position indicated in Fig. 3 with the indicator opening 55 thereof at A.' It Will be menses curately indicate the depth of the respective wards in the key or a key blank while hemg cut. Thus it Will be readily apparent that the locksmith may measure a key, bothv osition of the wards and the depth as to thereo and make a cipher record thereof which may be filed away and a duplicatev key can be readil made at any time thereafter by setting the machine or moving the pointers to the positions indicated by such record. If desired, holes 56 may be placed in'the dial plate 51 opposite theindicating characters 50 and a pin inserted therein adapted to contact with a lug 57 projecting from the pointer 48 so as to positively limit the movement of said pointer. Such pin can readily be inserted and removed from the holes 1n accordance with the record as to the dc th of the wards of any key being du licate t will readil be understood that we do not wish to be limited tora particular construction and arrangement of the device as shown for various modifications in the specitic details of construction and arrangement may be made without departing from the spirit and scope of the invention.

lVe claim:

1. In a key duplicating and recording machine, the combination of means for obtain ing a record of a key to be duplicated, comi 2 prising gages ior determining and indicating the position and depth respectively of the wards of the he and means for cutting wards in a key blan in accordance with the readings of said ages.

In a key dupilicating and recordin machine, the combination of means for holding a key to be duplicated, a gage for determining and indicating the position of the wards, a gage for-determining and indicating the depth of the wards and means for cutting corresponding wards in a key blank when placed in said key holding means.

3. In a key duplicating and recording machine, the combination of a movable mem-' ber provided with means for holding a key to be duplicated, means operatively connected with said member for determining and indicating the position of the wards in said key, means cooperatin' with said member for determining and in ica'ting the depth of said wards and means for cutting corresponding wards in. a key blank when substituted for the key in said key holding means,'

a, In a key duplicating and recording machine, the com'olnation of a movable men ber provided with key holding means, means for removably securing said key holder to said member to permit the substitution of one key holder for another, an indicating gage carried by said member and adapted to determine the position of the wards of a key placed in said key holder, an indicating gage mounted adjacent to said movable member and adapted to be actuated thereby to determine the depth of the wards and means for cutting wards in a key blank, placed in said key'holder, in accordance with the readings of said gages.

5. In a key duplicating and recording machine, the combination oi a movable memher provided with key holding means, means for supporting said member for reciprocation longitudinally and for rocking movement in the plane of a key in saidkey holder,

an adjustable gage for positioning said mem ber longitudinally according to the wards of a key in said key holder,a gage for determining and indicating the rocking movement of said member according to the depth of they wards 111 said key and means for cutting corresponding Wards in a key blank placed

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