US745064A - Lock. - Google Patents

Description

No. 745,064. PATENTED NOV. 24., 1903.

O. KATZENBERGER.

LOCK.

APPLICATION FILED AUG. 27, 1.903.

N0 MODEL. 2 SHEETS-SHEET 1.

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A TTOHNEYS No. 745,064. PATBNTED NOV. 24, 1903.

- 0. KATZENBERGER.

LOOK.

APPLICATION FILED AUG. 2 7, 1903.

A TTOHNE YS No. 'mace-.

UNITED STATES Patented November 24, 1903.

PATnT rtree..

OSCAR KATZENBERGER, OF SAN ANTONIO, TEXAS, ASSIGNOR TO KATZEN- BERGER KEYLESS LOCK COMPANY, OF SAN ANTONIO, TEXAS.

LOCK.

SPECIFICATION forming part of Letters Patent No. 745,064, dated November 24, 1903.

Application tiled August 27, 1903. Serial No. 170,967. (No model) To all whom, it may concern;

Be it known that I, OSCAR KATZENBERGER, a citizen of the United States, and a resident of San Antonio, in the county of Bexar and State of Texas, have invented new and useful Improvements in Locks, of which the following is a full, clear, and exact description.

This invention relates to locks of the permutation type, and more particularly to such to as embody the generic features covered by Letters Patent of the United States granted to me July 23, 1901, No. 678,956, and also on February 1S, 1902, No. 693,719, and has for its object to provide novel and essential details of improvement for a lock of the character indicated which are applicable to all kinds of locks where `said features of novelty can be made to coact, these details rendering the lock more convenient to operate, more zo dilicult to surreptitiously open, enables the quick arrangement of parts 0n a special combination, so as to change it at will, facilitates the locking of the lock when the details are changed from open adjustment, and enables the working of the lock mechanism to open it either by sense of touch or visual observation or both together.

A further object is to adapt the novel constructive details for production by modern 3o' methods of machine manufacture, so as to cheapen the lock, enable its rapid construction in quantity, and afford an absolutelysafe lock at a moderate cost.

The invention is illustrated in one form of its application in the accompanying drawings, that form a part of this specification, and essentially consists in the novel features of construction therein shown and as is hereinafter described, and defined in the appended 4o claims.

The features of the present improvement are particularly well adapted for application to a padlock and to exemplify their coactive operation are represented as forming the working mechanism of such a lock.

In the drawings, which represent the de-- tion thereon. Fig. 2 is a side view of the same, showing the working parts exposed by the removal of a side wall of the lock-casing, said parts being adjusted to release the bowed shackle of the lock, which is thrown into open position. Fig. 3 is a side view of the lockcasing opened at the same side as in Fig. 2, parts being removed therefrom, so as to expose novel details seen on the line 3 3 in 6o Fig. 6Y in the direction of the arrows. Fig. 4 is a transverse sectional view of parts substantially on the line 4 4 in Fig. 2. Fig. 5 is a side view of the open lock-casing and of the Working parts shown in locked condition. Fig. Gis an enlarged transverse sectional view of the closed lock-case and of novel details therein, taken substantially on the line 6 6 in Fig. 1; and Fig. 7 is a transyverse sectional view of details substantially 7o on the line 7 7 in Fig. 3.

The lock-case comprises a back Wall 10, a front wall 11, and an edge wall 12 of usual `form-that is to say, the two similar wallplates 10 and 11 are mainly circular on their 75 edges and are spaced apart parallel with each other by the curved edge wall, that is positioned flush with said edges. A straight edge portion is formed on the periphery of each wall 10 11, and preferably on the back wall 8o 10 is erected a corresponding straight wall 13, that is positioned -between the opposite eX- tremities a a Aof the curved edge wall or plate 12, leaving two openings b Z9 intervening the ends of the straight wall and said ends of the edgewall.

Four similar studs 14, 15, 16, and 17 are transversely secured at nearly equidistant points between the back and front walls 10 11, these studs being located near the inner go surface of the edge Wall 12, and the two last'- named studs 16 17 are respectively positioned opposite and near to the open-ings b b'.

At a suitable point near the center of the case a pivot-post 18 is erected from the front 95 wall 11 and nearly contacts with the back wall10 when the latter-named wall is secured in place upon the ends of the studs 14 1516 17, that pass through perforations in the said back wall to be riveted thereon or be otherwise secured thereto when the lock is conipleted.

ICG

The four arms 19 19 19b 19c of the deten-t` dog are so relatively disposed in pairs that each two dog members which project opposite from each other have one side edge c thereof alined with a side edge on the opposite dog member, and said alined side edges, if prolonged to meet each other, would intersect the axial center of the pivot-post 18.

Opposite the respective alined side edges c c c c and at a proper distance therefrom four short cylindrical shafts 2O 2l 22 23 are respectively journaled in the front wall 11. The journal-shafts are respectively provided with a collar-like cylindrical enlargement 2Oa 2la 22a 23a, that loosely contacts with the eX- terior flat surface of the side wall 11,and preferably integral with each cylindrical enlargement a peripherally-roughened cylindrical knob 20b 2lb 22b 23 is thereon formed, which afford convenient means to manipulate the shafts for their respective rotatable adjustment.

Upon the journal-shafts 2O 21 22 23 circu lar tumbler-wheels 24 25 26 27 are respectively mounted and secured either by frictional engagementof the shaft Within the cen- ,and arrangement of the parts as described tral bore of the Wheel or by other suitable means, each tumbler-wheel having its otherwise smooth circular periphery indented with a series of V-shaped notches d, that are evenly spaced apart by teeth c, that taper somewhat toward their Vouter ends and are rounded on said ends, as shown in Fig. 3.

Upon the center post 18, beneath the fourarmed dog previously described, two pairs of spring-detents are mounted and project radially therefrom. One pair of the detents consists of a resilient wire strand that at its longitudinal center is Wrapped around the post 18 near its base to form a spring-coil, and thence extends oppositely therefrom to produce the spring-Wire arms 24Jt 26, that respectively terminate in angularly-bent toes f g, which respectively engage in appropriate notches d between the teeth e on the tumbler-Wheels 2t 26. In a like manner the remaining pair of detents consists of a resilient wire strand that is Wrapped around the body of the post 18` immediately above the spring-coil from which the detent-arms 24;a 26"L are extended, and from said upper coil extend the resilient arms 25a 27, that terminate in V-shaped toes f' g', that are bent on the ends of the arms and respectively engage between appropriate teeth e onthe tumbler- Wheels 25 27. lt is obvious that when the knobs which project from the journal- shafts 20,21, 22, and 23 are turned the toes on the Y detentarms just described will yield and successively enter the notches d, that space apart the angular teeth e, said arms having sufficient tensile force to prevent an accidental turning movement of the tumbler-wheels with which they are engaged.

Upon each tumbler- wheel 24C, 25, 26, and 27 (see Fig. 6) a thin flat washer h is seated after being passed over the ends of the journalshafts whereon said wheels are secured, and upon each washer h a cup-like friction-disk 28 is seated, saiddisks, that are in Washer form, being strung upon the journal-shafts so as to permit them to engage at and near their edges with the washers h.

On each journal- shaft 20, 21, 22, and 23 an abutment-collar 29 is mounted, said collars each having a segment removed from the edge portion, so as to produce a flat side t onthe otherwise circular periphery. The segmental abutment-collars 29 are fitted measurably tight upon the journal-shafts, but yet are permitted to slide longitudinally or be turned under pressure, and each collar is held pressed down upon a respective friction-disk 28 by an open keeper-ring 30, that is introduced into a circumferential groove 7c, formed at a suitable point in the journal-shaft said ring is to embrace, and the latter is when inserted so closed by lateral pressure thereon as to become a fixture on the shaft, and thus hold the collar 29, with which it is in contact, forcibly compressed upon a respective disk 28.

It will be apparent that by the construction the flat surfacest' on the abutment-collars 29 may each be held at a desired point rotatably considered with regard to the teeth e on the tumbler-wheel that is fixed on a respective shaft, this relative disposal of the straight abutment-walls i being obviously produced by frictional contact of the disks 28 with the dat Washers h, that are thus frictionally pressed upon the tumbler-Wheels,and also by the frictional engagement of said disks with the collars 29.

The bowed shackle 3l of the padlock is provided with a neck 4m at one of its ends, and on said neck, that is designed to rock in the opening b', a preferably circularly-edged hub 3la is formed that is centrally and transversely perforated to receive the stud V17, Whereon the shackle is designed to rock, the width of the opening b permitting this movement to be eected while the hub is positioned within the lock-case.

A throw-spring 32 is secured by one scrollbent end upon the body of the stud llt and thence extends along the inner surface of the edge wall 12 to have contact with a projection m', formed on the periphery of the hub 31a, this engagement of the spring at its free end with the hub adapting said spring to throw the shackle from closed adjustment, as shown in Fig. 5, upward and outward, as rep- .resented in Fig. 2, when the shackle is free at its opposite end. The free end of the shackle 3l is formedwith a latch-hook 3l", so reduced in thickness and Width as to permit Athe free insertion of said hook Within the IOS lIO

opening b, this reduction in size affording an offset shoulder nat the junction ot' the latchhook with the larger body of the shackle, and it will be noticed that the nose of the hook which projects from the edge that is farthest from the wall 12V of the lock-case forms a shoulder 0 thereon that is parallel with and properly spaced from the offset shoulder n.

Opposite to and near the side of the hooknose on the shackle and level on its upper side with the shoulder o when the shackle is in closed adjustment a rest-block p is formed or secured on the front wall 11 of the lockcase, and near the hub 31 another rest-block q is projected from said front wall, the upper surface of said block q being spaced from and parallel with the straight wall13, that extends between the openings b b', which receive the ends of the shackle 3l.

A latch-bar 33 is provided having a thickness at and near one end thereof which adapts it to freely slide without looseness between the rest-block q and the true inner surface of the wall-piece 13, whereon it engages at and near each end of the bar and wall. The thickness of the latch-bar 33 between its upper and lower sides at and near the rest-block p is so proportioned that it will slidably engage between said rest-block and the end portion of the transverse case-wall 13, adjacent tothe opening b, so that the latch-bar is held to slide longitudinally without improper play between the wall13 and rest-blocks p and q, it being understood that the slide-bar is also in loose contact with the front and back wallplates 11 and 10 of the lock-case.

A preferably dovetail notch r is formed in the lower edge of the forward end portion of the latch-bar 33, said notch of proper depth being sov located that a latch-nose s is left remaining intact with the latch-bar at its eX- tremity which is near vthe rest-block p, and, as shown, said latch-nose s rests upon and is adapted to reciprocate on the rest-block p, so that the latch-nose s may be slid endwise into latched engagement with the shoulder o on the shackle 3l when the latter is in closed condition, as shown in Fig. 5.

One member 19b of the four-limbed dog that is held to rock on the pivot-post 18 is extended toward the notch r in the latch-bar 33 and at and near its free end is reduced somewhat in thickness, considered laterally, so as to provide ashort finger t thereon, which enters said notch.

A plate-spring u, that is normally straight, is attached by one end upon the arm 19, whereon it may be clamped by the secured strip 19d, and thence projects at an acute angle from the finger t, so as to dispose the free end of the spring u within the dovetail notch r in contact with the forward trans` verse wall ofsaid notch and pressing thereon, so as to hold the linger t in contact with the rear inclined wall of the notch 'l'.

Therest-block p is sloped to remove its rear upper corner, and thus accommodate the spring u, when the spring is somewhat compressed by aforward sliding movement ot the bar 33, as shown in Fig. 5, effected by means that is hereinafter described.

Upon the stud 15 a coiled wire spring 34 is mounted, as indicated in Figs. 2, 3, 4, and 5, one portion of the spring extending from the lower end of its coil suiiiciently to produce a spring member o, that contacts with the edge Wall12 of the lock-case near the front wall 11. From the other end of the coil that in service is located near the rear wall 10 of the case another spring member w is projected toward the arm 19a of the detent-dog, and on said spring member w a dependingl limb w is formed that contacts with the dog member 19a, the tension of the spring-coil 34: and the members thereon being exerted to press the four arms of the detent-dog in the direction of the curved arrow in Figs. 2 and 5.

On each of the collars 2Oa 21a 22a 23a, that are adjacent to the front wall 11 of the lockcase, a series of indicating-marks vy are formed, which are spaced apart evenly and equally with the spaces d between lthe teeth e on respective tumbler- wheels 24, 25, 26, and 27, and upon said front wall of the case a single indicating-mark ,a is located opposite the indicating-marks 'y on each collar mentioned. The marks y on each collar equal in number the teeth formed on the tumbler-wheels, and when said wheels are turned preferably to the right, as is indicated by the curved arrow at each knob, each notch d between the teeth e on each tumbler-wheel, being alined with a respective indicating-mark y on the collar that is fixed on the journal-shaft whereon a respective tumbler-wheel is affixed, will come opposite the mark s on the case when an approximatevtoe ff org g' drops into an alined notch CZ, so that the position of any one of the tumbler-wheels rotatably considered will be clearly shown by the mark y on the respective collar which is disposed by the turning movement of the collar and tumblerwheel directly opposite the fixed mark on the case at that particular collar.

It will be seen that if the vknobs on the shafts 20 2l 22 23 are turned so as to locate the flat abutments t on the collars 29 opposite respective edges c on the four-armed dog the spring 34 will press said arms against the straight edges 'L' of the collars and rock the dog in the direction of the arrow x in Fig. 2, which will cause the finger t on the dog-arm 19b to push the latch-bar 33 rearwardly a suficient distance to remove the toefof thelatchbar from engagement with the shoulder o on the shackle 3l that may have been engaged therewith, which will permit the throw-spring 32 to throw the shackle 31 into the open position. (Indicated in Figs. 1 and 2.)

It mayr here be explained that in order to lock the lock it is only necessary to turn either one or all of the knobs on thejournalshafts 20 2l 22 23, so as to cause the plain circular portions of the peripheries on the abut- ICO ment-collars 29 to engage the edges c on the arms of the detent-dog, as this will rock the dog-arms toward the rest-blockp and push the latch-bar 33 so that the latching-nose s thereon will project over the right-hand edge of said rest-block p against the stress of the plate-spring u. It will be seen in Figs. 2 and 5 that the right-hand end wall of the latchbar 33 is rendered convex, which permits the nose of the latch-hook on the shackle 31 to slide downward thereon and push the latchbar toward the left'side of the lock, the spring u returning the nose s to its projected position, which causes the part s to slide into engagement with the shoulder o on the latchnose of the shackle, and thus lock the lock, and itis to be understood that this adjustment of the latch-bar will be effected by the 'spring u whether the shackle is in closed or open adjustment.

To arrange the lock to be opened on a particular combination that will be represented by the location of each detent-toe ff g g in a certain selected notch d on each tumblerwheel and also by a complementary mark on each collar being disposed opposite a respective fixed 'mark a on the case-wall, it is necessary that the four-armed dog be held stationary when the fiat places z' on the detentcollars are in contact with the edges c on the arms of said dog. For this purpose l have provided 'a set-screw 35, that is screwed into a tapped perforation in the edge wall l2 of the case, so that it may be caused to impinge .on the end of an arm of the dog that is then `from rotation by the arms of the dog, each tumbler- Wheel 24, 25, 26, and 27 may be adjusted to locate a respective toe ff g g' in a selected notch d in said tumbler-wheel, this notch being determined by its distance from the circular portion of the periphery of the tumbler-wheel, it being understood that the tumbler-wheels are all to be turned tothe right, or in the direction of the curved arrows l in Fig. 1, while setting the lock to a particulwheels are shown.

lar combination. For example, assuming that the knobs on thejournal-shaf'ts have been turned so as to dispose the detent-toe f' in the iirst notch din the tumbler-wheel 25,which would be the commencement of the series of notches at the left hand, considered from the front of the lock, but that appears at the right in Fig. 3 Where the rear faces of the tumbler- This Will be number one for theirstwheel 25. Next We set the tumblerwheel 26 by entering the toe g of the springarm 26a in the second notch d from the plain' surface of the tumbler-wheel, as indicated in Fig. 3. This is the second number of the combination. In alike manner thetumblerwheel 27 is moved so as to locate the toe g in the third notch d in said wheel, and last the tumbler-wheel 24 is moved to seat the toe fon the spring-arm 24a in the fourth notch d in said tumbler-wheel 24, counting from and including the first notch in the periphery of the wheel, considered from, the right of the case viewed from the front side of the same. The combination,therefore, for unlocking the lockis 12 3 4, theinitial number, 1 being defined by the wheel 25, the next by the wheel 26, the third by the Wheel 27, and the fourth by the wheel 24, and when the wheels are adjusted by turning the knobs exterior of the case, so that the spring-pressed toes ff g g drop into the appropriate notches, which can be felt by the operator or seen by inspection of the marks y on the respective collars 2Oa 2l 22L 23a, that come opposite the fixed marks e' on the case-wall 1l, the shackle 31 is in condition for release, to effect which requires a slight pressure ou the shackle 31, as will now be made clear. l

It will be observed that the pressure of lthe throw-spring 32 is applied at its free end upon the projection 'm' on the hub 31, that is below the pivot-stud 17, whereon the shackle 31 is held to rock. This arrangement of parts causes the shackle to be raised slightlyat its end whereon the latch-nose 31b is formed and produces a slight crevice between the shouldern on the shackle and the upper side of the case-wall, as defined at a. (See Fig. 5.) This lifting action of the throw-spring 32 causes the shoulder o on the latch-nose 3lb to press upon the lower side of the end s on the latchbar 33, so as to frictionally retain said bar from sliding when the collars 29 have all been adjusted to dispose their fiat faces z' opposite the edges c on the arms of the detent-dog, and thus permit the spring 34 to exert its force for the slidable movement of the latchbar by pressure ot' the finger t thereon. In other words, the slight friction between the latch-bar end s and the shoulder o prevents the joint action of the springs 32 34 from sliding the latch-bar 33 and simultaneously throwing the shackle 3l into open adjustment.

` To release the latch-bar and also give initial impetus to the throw-spring 32, it is only necessary to press upon the bowed shackle so asA to close the crevice between its shoulder n and the case, which will carry the shoulder o from engagement with the latch-bar 33 and permit the springs 32 34 to instantly slide the bar 33 and throw up the shackle, the working parts of the lock then assuming the relative positions represented in Fig. 2.

It is evident that the turning movement of IOC IIO

the shafts 2O 21 22 23 in either direction will Y not injure the lock; but the adjustment to unlock it should be conducted as hereinbefore described.

raaoei As the spring-arms that press the detenttoes ff g g into respective notches d in the tumbler wheels are comparatively weak, there is but little noise made in working the shafts carrying the tumbler-wheels while arranging them to open the lock, but the action will be plainly felt and the notches occupied will be indicated distinctly in that manner and also by a visual inspection of the marks y on the collars that are designated by their positions with regard to the marks z on the case.

It will be seen from the foregoing description of novel details that the improved permutation-lock may be changed in combination an indefinite number of times, that the change for setting the tu mblers on a new combination may be effected by sense of touch only, that the lock may be locked or unlocked in the dark, and that the lock is safe against picking or opening by turning the knobs unless the combination is known, and the operator is aware that as a iinal manipulation the shackle must be pressed upon the lockcase.

Having thus described my invention, I claim as new and desire to secure by Letters Patentl. In a lock of the character described, the combination with a case, a rotatably-supported locking-collar therein, and a springpressed dog having an arm and pivoted in the case, and controlled in rocking movement by the collar, of a latch-bar engaged with the armand moved in one direction therewith, and means carried by said arm, adapted to slide the latch-bar in the opposite direction.

2. In a lock of the character described, the combination with a case, a plurality of rotatably supported locking -collars therein, means for rotating the collars, and a springpressed dog pivoted in the case, having arms, the-edges on which have contact with said collars, of a latch-bar engaged by one arm of the dogy and moved in one direction therewith, and means, carried by said arm,adapted to slide the latch-bar in the opposite direction.

3. In a lock of the character described, the combination with a case, a plurality of locking-collars rotatably supported in` the case, each collarhavng a circular edge that merges into a fiat surface thereon, and a multiplearmed dog pivoted in the case and springpressed toward the collars, the edges on the arms -of said dog engaging therewith, of a latch-bar engaged by one arm of the dog, and means, carried by said arm, adapted to slide the latch-bar in the opposite direction,

4;. In a lock of the character described, the combination with a case, a plurality of manually-operative shafts held to rotatein the case, circularly-edged collars mounted on respective shafts and each having a flat side, and a spring-pressed dog pivoted in the case, having arms, the edges on which engage said collars, of a latch-bar engaged by one arm of the dog, and means, carried by said arm,

adapted to slide the latch-bar in the opposite direction.

5. In a lock of the character described, the combination with a case, a dog having a plurality of arms and pivoted inthe case,a spring adapted `to rock the dog in one direction, and adjustable means for controlling the rocking movement of the dog, of a latch-bar having a 'notch that loosely receives au arm of the dog and is moved in one direction therewith, and a plate-spring extended from said arm into said notch, the pressure of the spring thereon being adapted to slide the latch-bar in an opposite direction.

6. In a lock of the character described, th combination with va case, a bowed shackle pivoted by one end in the case and having a latch-nose on the opposite end,having a hookshoulder adapted to enter an opening in the case, of a four-armed detent-dog pivoted between its arms on a post in the case, a notched latch-bar held to slide in the case, near an arm of the dog that has a nger entered within the notch of the latch-bar, a plate-spring carried by said arm and extended into the notch, so as to press on the latch-bar oppovsitely from the pressure of the dog-arm, and

a supported coiled spring having arms that respectively press on a wall of the case and upon one arm of the dog.

7. In a lock of the character described, the combination with a case, a dog having radially-edged arms and pivoted in the caseintermediate the arms, a coiled spring pressing the arms in one direction, a notched slidable latch-bar engaged in its notch by one arm of the dog, spaced shafts journaled in the case, and frictionally-held collars carried by the shafts, each having a circular edge iiattened at one side, the dog and latch-bar moving under stress of the coiled spring when the iiat sides of the collars are opposite the radial edges of the arms.

8. In a lock of the character described, the combination with a case, a dog having radially-edged arms and pivoted in the case intermediate the arms, a coiled spring pressing the arms in one direction, a notched slidable latch-bar engaged in its notch by one arm of the dog, spaced shafts journaled in the case, friction ally-held collars carried by the shafts, each collar having a circular edge flattened at one side, the dog and latch-bar moving under stress of the coiled spring when the flat sides of the collars are opposite the radial edges of the arms, and a plate-spring projected from the arm of the dog that enters the notch of the latch-bar, said spring also entering the notch and pressing the latlchfbar ICO IIO

in a direction opposite from that given by the shackle.

10. In a lock of the character described, the

'combination with a case, of a four-armed detent-dog, a spring pressing the arms of said dog in one direction, four shafts having knobs on one end that are operative from Without the case, spring-pressed collars on the shafts, having circular edges that are flattened at one side, a latch-bar held to slide in the case and engaged by one arm of the dog, said bar receiving slidable adjustment in one direction when the flat sides on the collars are turned opposite side edges of the arms, a bowed shackle pivoted by one end in an opening in the case, said shackle having a latchnose on the opposite end, said nose having a notched side forming a locking shoulder thereon, and a plate-spring projected from the arm that engages in a notch in the latchbar, the plate-spring being adapted to press the latch-bar for locked engagement With the shoulder on the nose of the shackle, when said shackle is rocked to enter its nose Within the case.

11. In-a lockof the character described, the combination With a case, of a plurality of shafts journaled in the front Wall of said case, each shaft having a knob on its outer end, a tumbler-Wheel secured on each shaft and contacting with the inner surface of the front wall, said tumbler-wheels each having a series of notches spaced by slope-sided teeth,

and resilient Wire-arms supported on a post in the case, each arm having an integral detent-toe thereon, adapted to enter any one of the series of notches in a respective tumbler- Wheel.

12. In a lock of the character described, the combination With a case, and a detent-dog having a plurality of radial arms, said dog being pivoted in the case between the arms, of a set-screw adjnstably held in the edge wall of the case which by pressure on an end of one arm of the dog will hold said dog from turning on its pivot.

13. In a lock of the character described, the combination with a case, a four-armed dog held to rock on a post in the case, a latchbar slidable in the case and engaged by one arm of the dog, and a shackle that the latchbar may engage, to hold a latch-nose on the shackle Within the case, of four journalshafts having a knob on each, rotatable from the exterior of the case, each shaft having a tumbler-wheel secured thereon Within the case, a Washer-'plate on the shaft, seated ou the tumbler-Wheel, a cupped resilient disk mounted on the shaft and engaging the Washer, a circularly-edged collar on each shaft, seating on the cupped disk, said co1- lars having a flat side on each circular edge, each shaft havinga circumferential groove therein, and a closable split keeper-ring insertible and securable by its closure in the groove, the ring holding the collar and disk compressed upon the washer and the tumbler- Wheel.

Inl testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses.

OSCAR KATZENBERGER.

Witnesses:

J. E. TRAINER, W. I. GOFORTH.

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