US1024524A - Type-casting machine. - Google Patents

Description

F. H. PIERPONT. TYPE CASTING MAGHINE. I APPLICATION FILED AUG. 6, 1910. 1 ,O24,524 I Patented Apr. 30, 1912.

3 SHEETS-SHEET l.

COLUMBIA ILANDGRAPII (10.. WASHINGTON. n. C.

I l l I P. H. PIERPONT. TYPE CASTING MACHINE.

APPLICATION FILED AUG. 6, 1910. 1,024,524. Patented Apr. 30, 1912.

3 SHEETS-SHEET 2.

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fltforneys P. H. PIERPONT. I TYPE CASTING MACHINE. APPLICATION rum: AUG. 6, 1910.

Patented Apr. 30, 1912.

8 SHEETS-SHEET 3.

.Zkz'reiciar COLUMBIA PLANOGRAPH CO" WASHINGTON UNITED STATES PATENT OFFICE.

FRANK HINMAN PIERPONT, OF I-IORLEY, ENGLAND, ASSIGNOR T0 LANS TON MONOTYPE MACHINE COMPANY, OF PHILADELPHIA, PENNSYLVANIA, A CORPORATION OF VIRGINIA.

To all whom it may concern:

Be it known that I, FRANK HINMAN PIER- FONT, a citizen of the United States, temporarily residing at Horley, county of Surrey, England, have invented a certain new and useful Improvement in Type-Casting Machines; and I do hereby declare the following to be a full, clear, and exact description of the same, reference being had'to the accompanying drawings, forming a part of this specification, and to the figures and letters of reference marked thereon.

This invention relates to type casting, setting, writing and similar machines employing a movable selective member controlled. by a series of stops or gages, and it has for its principal object to increase the range or numerical capacity of the selective mecha nism without a corresponding change in the number of stop-pins or gages, or, in other words, to materially increase the capacity of the selective control mechanism without a corresponding increase in the control elements.

The invention is especially applicable to the monotype casting machine and will be described herein as applied to a machine of this type wherein there is employed a diecase or matrix carrier provided with matrices arranged in rows on intersecting lines, and adapted to bebrought individually-to a common centering position opposite the impression point or mold by a compound motion in two directions, the selection of the matrix being under the control of a selective mechanism including a pattern or record strip and gaging members actuated thereby.

Two series of selecting gages in the form of stop-pins are usually employed to control or govern the movements of the die case, one series representing columns of matrices in one direction and the other rows of matrices in the other direction, and with each series of gages cooperates a translating or positioning mechanism, whereof one acts upon the die-case and the other upon the die-case carrier.

The number of characters or matrices in a die case is theoretically unlimited; but in practice it is limited by two factors, 2'. 6., speed and inertia, to such an extent that the maximum degree of movement between centering positions and the inertia incident Specification of Letters Patent.

Application filed August 6, 1910.

TYPE-CASTING MACHINE.

Patented Apr. 30, 1912.

Serial No. 575,905. 7

thereto will not unduly limit the speed of the machine or diminish the quality of the product. Owing to the limitations thus imposed it has been necessary theretofore, where more characters or symbols are required than can find places in the die-case, to stop the machine, remove the die case, and substitute another, either by hand, as in Patent No. 625,998, of May 30, 1899, or, automatically, as in Patent No. 7 82,549, of February 14, 1905. It is also practical to a certain extent and without unduly increasing the objections due to inertia and momentum, to increase the capacity of a machine, such as that of said Patent No. 625,998, by the addition of one or more rows or columns of characters to the die-case and providing the necessary extra number of gages and a-cor responding increase in the travel of thepositioning devices to deal with these; but such an addition necessitates a reorganization not only of the positioning and other mechanism of the casting machine, but, also, as an incident thereto, of the machine for preparing the record strip or controller; and the present invention is not to be confused with this or any like schemes involving merely a duplication, substitution, or increase in the number or size of existing parts.

According to the present invention the capacity of the machine, that is, the number of characters, symbols or the like available at a'time, is increased without involving or necessitating any change whatever in the number of gages, the travel of the positioning mechanism, or the construction of the pattern producing mechanism. This is accomplished by providing the die-case with one or more additional or supplementary groups of matrices in fixed relation to one another and to those of the main or normal group, and a selective transfer mechanism for shifting the control of the positioning mechanism from one group to the other. This shift mechanism may be automatic or selective, or both automatic and selective in effecting the interchange; and it is also a feature of the present invention to control the shift mechanism from the pattern or record strip, and to effect the transfer from one group of matrices to the other during the normal cycle of the machine.

As before explained in the monotype machine the die-case is positioned to center the required matrix at the impression point by movements in two directions whereof each movement is under the control of a separate positioning mechanism the latter in turn controlled by a series of gages or stops the members of which are rendered operative, as required, by signals in the pattern or record strip. Each positioning mechanism operates upon translating devices coupled with its die-case or die-case carrier, as the case may be, to shift said member and bring the line or column of the die-case corresponding with the operating gage or stoppin opposite the impression point.

According to the present invention the translating devices intermediate the compound or sectional die case or its carrier and the positioning mechanism therefor is provided with two or more translating members or interponents located at relatively different points in the line of movement of said positioning mechanism and adapted to be alternately engaged thereby, the one for determining the position of the main section of the die-case and the other for determining that of the supplemental or additional section. The said translating members or interponents are selectively and automatically brought into action by mechanism controlled by signals in the pattern or record-strip during the normal cycle of the machine so that there is no lost or idle cycle.

\Vhile broadly speaking, the invention is applicable to other forms and varieties of machines it is more especially devised for use in connection with the type casting and setting machine of Patent No. 625,998 in which connection it will be described.

In th accompanying drawings illustrating a preferred form of embodiment Figure 1 is a plan view of a portion of the type casting machine showing the invention applied thereto. Fig. 2 is a right hand end view of Fig. 1. Fig. 3 is a plan view of a section of the record strip or pattern. Figs. 4 to 11 inclusive are detail views of the shift mechanism, the parts being represented in different positions of adjustment. Fig. 12 is a view in perspective of the draw rod bearing the translating members.

The same letters designate like parts in the several figures.

As before stated the casting machine is essentially the same as described in Patent No. 625,988, to which reference is had for a more detailed description of its construction and mode of operation. It will suflice for present purposes to refer briefly to the parts and functions most intimately connected with the present invention, such as the die-case A, its carrier B, the positioning mechanisms F, G, ported tracker bar J, and type ejector P.

The die case A is mounted in its carrier B (the latter indicated by broken lines in Fig. 1) to slide in one direction, and the carrier is in turn mounted in a holder and arranged to slide thereon in a direction at right angles to the movement of the die case, so that by at-wo-way movement communicated to the die-case any matrix contained therein may be brought opposite a common centering point.

The positioning mechanisms F, G, each includes a primary gage in the form of a series of stop pins H (or H) primary positioning devices, represented by oppositely movable jaws F, F a secondary gage in the form of a movable block K located be tween jaws F, F and by the closing movement of the latter positioned to correspond with the engaged stop pin of series H (or H); secondary positioning devices represented by oppositely movable jaws F, F, the latter closing upon the secondary gage K to position the latter; and translating devices coupled with the die-case or its carrier and provided with a translating or transmission member D (or projecting between jaws F' F, and acted upon by the latter to shift the die-case or its carrier, to the position indicated by the gage K.

The actuating devices are so constructed and arranged that the two pairs of jaws pertaining to each positioning mechanism operate alternately, that is to say, as the jaws of the primary positioning devices close on a stop-pin of the primary gage, to position the secondary gaging member, the jaws of the secondary positioning devices open, to release said secondary gaging member and the die-case or its carrier, and the jaws of the secondary positioning devices close on the secondary gaging member, to position the die-case or its carrier, the jaws of the primary positioning devices open to permit a succeeding adjustment of the stop-pins of the primary gage. Thus the primary and secondary gages are set during one cycle, and the setting transferred to the die-case during the next succeeding cycle, hence the signal presented during one cycle is translated and becomes effective upon the diecase during the succeeding cycle.

The stop-pin of each series H (or H) most remote from the die-case is fixed and projects into the path of jaw F; all the other pins are normally removed from but capable of being projected into the path of said jaw, and each is provided with an opcrating cylinder connected to a separate port in the tracker bar J, through which port air under pressure is admitted to render active the stop-pin corresponding with the line or column of the die-case, as indicated by a perforation in the pattern.

The machine is also equipped with a separate group of three pins relating to the justification mechanism and controlled through separate ports in the tracker bar J, two of said pins pertaining to the setting of the justification adjustments, while the third or shift pin f renders said adjustments operative upon the mold and in so doing serves to designate the justification or variable spaces.

Heretofore the possible combinations of the pins of series H and H provided for the centering of but two hundred and twenty five matrices, the number previously employed in a single die-case, inasmuch as each gage-pin represented but one row or stopping place in the direction of the move ment it controls; but, as already stated, it is a feature of the present invention that some or all of the gagepins be used to denote a plurality of positions, or one position in each of two sections or groups of matrices in the die-case, so that without changing in any respect the positioning mechanism as heretofore constructed its capacity is increased so as to bring the members of the additional section or group of matrices within its control.

In the present embodiment one additional die-case section or group A of matrices is illustrated, the same being disposed at the left end of the die-case and represented by full lines in Fig. 1. The added section contains six rows of fifteen matrices each, so that but six of the gage-pins of series H are called upon to serve for stopping places in both the main and supplemental diecase sections or groups, to accomplish which the translating devices through which jaws F F act upon the die-case are provided with an auxiliary translating or transmission member D remote from and adapted to alternate with the normal translating or transmission member D for engaging said jaws.

Translating members or interponents D, D, are adapted to be selectively and automatically brought into operative position bet-ween jaws F F, by mechanism controlled from the pattern or record strip, and any suitable arrangement of mechanism may be employed for the purpose, the invention in this respect not being limited to the preferred form of embodiment illustrated and about to be described. In the present instance the translating members D, D, are in the form of studs projecting radially at right angles to each other from and spaced longitudinally of the draw rod O, the latter held from longitudinal movement but permit-ted axial rotation in a bearing 0 on slide C, said slide being slotted, as usual, for the reception of the nose at of the die-case. By a rotary movement of said rod in its bearings either translating member D or D can be separately brought into position between jaws F F and when engaged by the latter corresponding rows of matrices in the main and supplemental sections of the die-case will be brought to the centering point. For example, assuming gage K to be set to correspond with the first or fixed pin of the H series and jaws F F separated, i. 6., opened, if now rod C is turned tobring translating member D into position, the closing of the jaws will shift the die case to present the first row, counting from the left, of matrices in the main die case opposite the centering point; but if translating member D is brought into position the left marginal row of the supplemental die-case group situated six units distant from the main group, will be brought to the centering point by the closing of said jaws upon gage. The second stop-pin (k acting in conjunction with D will locate the second row in the main group, and in conjunction with D the corresponding row in the supplemental group, and so on, the sixth pin serving to locate the sixth row in the main and supplemental groups according to whether D or D is used in conjunction therewith.

A convenient and at the same time novel mechanism for effecting the movements of rod 0 to bring translating members D D into active posit-ion, alternately, and for controlling the same from the pattern or record strip has been devised and will now be described. The rear end of rod C is slotted longitudinally, as at 0 to receive studs 0 carried by a sleeve on crank arm C said sleeve being supported against longitudinal motion in a bearing in bracket 0 fast on the frame, the construction being such as to compel simultaneous rotary motion of the crank-sleeve and rod C while permitting independent longitudinal motion of said rod. A lever C pivoted as at c on bracket 0 has one arm slotted at C for engagement with a pin C on crank arm C while its other arm is connected by a link C to a lever C the latter fulcrumed at 0 on the frame. Mounted upon pivot 0 is a bell crank lever C one arm whereof is coupled by a pin-and-slot connection with a bell crank lever C fulcrumed on the frame at 0 Lever C is provided with shoulders C C disposed one on each side of lever C and spaced to permit a limited amount of lost motion between said levers. Contiguous to levers C and C is a latch or doublepawl P carried by a rod P, the latter coupled with the driving mechanism of the machine to reciprocate continuously while the machine is in motion. This rod P may be one specially provided for the purpose, but as here illustrated it constitutes part of the type pusher which ejects the type from the carrier into the line-channel en route to the galley. Latch P is locked or retained in either of two extreme positions, to present one or the other of its engaging ends p p by a spring actuated pin 7? mounted on rod P and adapted to enter either of two adjacent notches p 7) on said latch.

Arm C of lever C is formed or provided with two engaging shoulders C C opposite one end or arm of latch P, and arm C of lever C is furnished with corresponding shoulders C, C", opposite the other end or arm of said latch, and both ends of the latch are constructed to engage with the respective levers C C by a movement in the same direction (from left to right in the drawings) to which end the left hand member is furnished with a shoulder 7) whereas the right hand member engages with its point or extreme end 7)". The several shoulders C, C, C, C, are so related to the reciprocating latch P that if the latter is tilted until pin p rests in notch 72 the right hand end 72 will be brought into the path of lever C and engage shoulders C" C in succession during successive reciprocations of rod P; while if said latch is tilted in the opposite direction, to bring pin 7) into notch p shoulder 72 will engage shoulders C C" in succession.

The rocking of latch P is conveniently effected by pistons Q, Q, working in cylinders Q, Qj, in a block Q, on the frame, said pistons being located respectively on opposite sides of the pivot of said latch. The arrangement is such that if piston Q is advanced it will engage and advance the left hand end of the latch into working position, at the same time effecting the withdrawal of the opposite end of the latch; and if piston Q. is advanced, the right hand end of the latch will be moved to operative position, and the left hand end retracted.

Cylinder Q is connected to a supply conduit Q. through a l .anch Q9 controlled by a valve while cylinder is likewise connected to the same conduit Q through a branch Q, controlled by a valve Q Said valves, when retracted by their springs q, operate to close their respective branches and cut. off pressure admitted in conduit Q and each valve works in a cylinder provided with a pressure supply conduit (Q? or Q, the former connected to valve Q and the latter to valve Q Of the three conduits thus connected to the latch operating devices Q through which pressure is supplied to operate pistons Q; Q, is in open communication with port 7' controlling the justification shift pin f, Q with port j leading to the seventh pin ]L7 of the H series, and Q with port j" leading to the second pin 71 of the H series. It may here be noted that these pins 71, and 7L7 in the example given correspond with the extreme right and left of the six rows of matrices forming the supplemental die-case, and, further, that one matrix in the row of the supplemental group responding to the pin 7L7 and one in the row of the main group responding to pin h is a blank suitable for the production of a space type.

According to the present plan separate signals are employed for setting the transmission members D D, that for D consisting of the justification space perforation 1, Fig. 3, registering with port j (conduit Q in conjunction with a perforation 2 registering with port 7' (conduit Q while the signal for D consists of the perforation 1 registering with port j (conduit Q in conjunction with a perforation 3 registering with port 7' (conduit Q The operation is as follows: Assuming the main die-case group of matrices to be in use, with the shoulder of latch P occupying the advance position in rear of shoulder C of lever C, as indicated in Fig. 11. If now a shift signal is presented containing perforations 1 and 3 air under pressure will be admitted through ports j and j thereby admitting pressure to conduits Q and Q Valve Q responding to the pressure in Q opens the passage between supply conduit Q and cylinder Q whereupon piston Q is advanced to tilt latch P into the path of shoulder C of lever C at the same time shifting pin 2) from notch 72 to 72 as seen in Fig. 4. Upon the return of rod P, after ejecting a type, and as it reaches the end of its travel, it will have moved lever G into the position indicated in Fig. 5, with shoulder C in engagement with the lower edge of lever C but without imparting motion to the latter, thus permitting D to complete the movement indicated by the previous signal. On the next forward movement of rod P, after the shift signal has passed from the tracker bar and another signal been sul stituted therefor, spring pin 2) permits latch P to yield sufficiently to pass behind shoulder C (Fig. (3) so that upon the next revolution of the machine the end 7) of latch P will engage shoulder C and rock lever C (Fig. 7) and, through the latter, levers C and (1*, thereby rotating red C to withdraw translating member D and substitute D (Fig. 1). Thus the matrix indicated by the shift signal and those succeeding, if containing perforations controlling any of the pins 71 to h of the H series, will be selected from the supplemental instead of the main group of matrices. hen it is desired to return to the main die-case group the justification-space signal perforation 1 is formed in conjunction with perforation 2, the latter acting through port and conduit Q to shift valve Q and thus open communication between conduit Q and cylinder Q thereby causing piston Q, to be projected and swing latch P into engagement with shoulders C of lever C as in Fig. 8. The first reciprocation of latch P shifts levers C C until shoulder C is engaged with lever G, as in Fig. 9, and the next succeeding forward movement of rod P efl'ects the engagement of shoulders p and C, Fig. 10; while the return of said rod causes the latch to shift levers C C to the position indicated in Fig. 11, thereby withdrawing transmission member D and substituting the normal member D. The fact that perforations 1, 2 and 3, enter into and form components of other signals, and in such cases admit pressures to their respective conduits Q, Q, and Q is of no significance, as it is only when they occur in the shift-signal combinations indicated that they are operative to eflect pistons Q, Q, and through the latter the shift mechanism.

When, as in the example given, the supplemental group of matrices contains a less number of rows than the main group controlled by the series of stop-pins, it is neces sary that in forming the pattern or record strip the operator should confine the signals immediately following the shift-signal for the supplemental group and until a shiftsignal for the main group has been produced, to signals controlling such of the stop-pins of series H as control rows in the supplemental group.

In practice the supplemental group of matrices may be devoted to block letters of which duplicates in Roman are contained in the first, six rows of the main die case section, counting from the left, the remaining nine rows in the last named section being devoted to small capitals and italics.

Although the invention has been described as applied to a machine having but one supplemental die-case section containing six rows of matrices, this number has'been selected only as one that can be applied to the machine of Patent No. 625998, without involving alterations in the parts adjacent the die-case to accommodate the increased size thereof; but it is to be understood that the invention is not limited in this respect, as any required number of matrices may be added and another additional die-case section or group may be located at the side adj acent that herein described to be controlled by the action ofpositioning mechanism in the manner described in connection with positioning mechanism F.

It may happen that while the same relative arrangement of matrices is preserved in the main and supplemental die-case groups the faces of one or the other group requires alteration, for example, the black characters may be replaced by accented characters such as are used in the French language, and to facilitate such an interchange the matrices composing the supplemental group may be so secured in the die-case that they can be removed bodily without disturbing the main die-case group; and should it be desired to replace the extended die-case, z. 6., one containing main and supplemental groups of matrices, by an ordinary die-case, a valve it may be inserted in the conduit QP so that by turning said valve the air will not pass to the shift mechanism.

Having thus described my invention what I claim as new and desire to secure by Letters Patent is 1. In a pattern controlled type setting or casting machine, the combination with a compound or sectional magazine or die case having connected therewith a revoluble draw rod provided with a plurality of stops, of a reciprocating rod, a double ended pawl or latch mounted thereon, and automatic means controlled from the pattern for projecting one or the other end of the latch to 5 effect rotation ofthe draw rod. V

2. In a pattern controlled type setting or casting machine, the combination with a r0 tatable draw rod provided with two stops,

a compound or sectional magazine or die 0. case, and a reciprocating rod carrying a double-ended latch, of two motors each controlling one end of the latch, a record strip or pattern, and mechanismcontrolled from the record strip or-pattern to operate the motors successively.

3. In a type setting or casting machine, the combination with the rotatable draw rod provided with stops D D, of a compound or sectional magazine or die case, a reciprocating rod carrying a double ended latch and lever mechanism adapted to be engaged by the opposite ends of the latch to operate the draw rod.

4. In a type setting or casting machine, the combination with a sectional magazine or die case and separately acting stops, one for each section, of a positioning mechanism, a record strip, a reciprocating pawl or latch controlled from therecord strip to interchange the stops in the path of said positioning mechanism, and mechanism controlled by the pawls to delay the interchange of the stops from one cycle of'the machine to another.

5. In a die-case adjusting or centering mechanism, the combination of the following elements, to wit; a movable die case; a positioning mechanism provided with a series of gages and a pair of oppositely movable jaws; and translating devices intermediate the die-case and said jaws, the same including a rotatable draw rod coupled with the die case and provided'with translating members disposed at an angle to each other and located at different points longitudinally of said rod.

6. In a die case adjusting'or centering mechanism the combination of the following elements, to wit; a die case; a positioning mechanism equipped with oppositely movable jaws and a series of gages for controlling the closed position of said jaws; translating devices for coupling the die case with said jaws, the same including a draw rod connected with the die case and provided with a plurality of translating members in the form of radial studs located at different points in the length of said rod and projecting radially therefrom at an angle to each other; and means for rotating said rod to selectively interpose said. translating members between the jaws of the positioning mechanism.

7. In a die case adjusting or centering mechanism the combination of the following elements, to wit; a movable die case; a positioning mechanism provided with a series of pattern controlled gages and a pair of oppositely movable jaws; translating devices intermediate said jaws and die case the same including a revoluble rod provided with angularly disposed studs; and pattern controlled actuating devices for turning said rod to selectively present said studs between the jaws of the positioning mechanism.

8. In a die case adjusting or centering mechanism provided with an adjusting mechanism and a plurality of translating members adapted to be selectively coupled thereto; and in combination therewith, an actuating mechanism including the following elements, to wit: a reciprocatory double ended latch, reversing transmission members coupled with said translating members and adapted to be engaged by said latch, and means for advancing either end of the latch into engagement with its complemental transmission member.

9. A control mechanism for the selective translating members of a die case adjusting or centering mechanism such as described including the following elements, in combination, to wit: two levers connected to oscillate together in relatively opposite directions, a reciprocating latch adapted to engage said levcrs, and means for selectively bringing said latch into operative engagement with either of said levers.

10. A control mechanism for the selective translating members of a die case adjusting or centering mechanism including the following elements, in combination, to Wit: two levers connected to oscillate in relatively opposite directions and each provided with a plurality of engaging shoulders; a reciprocating latch adapted to engage the shoulders of each of said levers, and selective means for controlling the engagement of the latch with either of said levers.

11. A control mechanism for the selective translating members of a die case adjusting mechanism the same including, in combination, the following elements, to wit: two levers coupled to oscillate in relatively opposite directions and each provided with a plurality of engaging shoulders, a reciproeating latch adapted to separately engage the shoulders 011 either of said levers; means for selectively advancing the latch into engagement with said levers; and means for maintaining such engagement after the advancing means is withdrawn.

12. A control mechanism for the selective translating members of a die case adjusting mechanism, the same including, in com bination, the following elements, to-wit: two levers coupled to oscillate in relatively opposite directions and connected to the translating members for positioning the latter; a reciprocating member provided with a latch pivotally supported thereon; means for shifting the latch upon its support to engage one or the other of said levers; and means for retaining the latch in adjusted position.

13. A control mechanism for the selective translating members of a die case adjusting mechanism, the same including, in combination, the following elements, to-wit: two levers coupled to oscillate in unison; a reciprocatory double ended latch adapted for en gagement with said levers alternately; and two pistons each controlling the engagement of one member of the latch with its complemental lever.

14. A control mechanism for the selective translating members of a die-case adjusting mechanism the same comprising, in combination, the following elements, to wit: a plurality of translating members; means for effecting alternate engagement of said translating members including reversing actuating devices; and two pistons each controlling one of said actuating devices.

15. A control mechanism for the selective translating members of a die-case adjusting mechanism, the same comprising, in combination, the following elements, to wit: a plurality of translating members; means for effecting alternate engagement of said translating members including reversing actuating devices therefor; two pistons each acting through said actuating devices to designate different translating members; a separate valve for each piston; and a pressure supply controlled by said valve.

16. A control mechanism for selective translating members of a die case adjusting mechanism the same comprising, in combination, the following elements, to wit: a plurality of translating members; means for bringing the translating members alternately into action including a controlling piston for each of said members; a ported tracker bar whereof one port communicates with the cylinders of both said pistons, to actuate the latter; a valve for each piston controlling the admission of pressure from the tracker bar port; and actuating devices for said valves connected with and controlled through a separate port in the tracker bar.

17. A control mechanism for the selective translating members of a die case positioning mechanism the same comprising, in combination, the following elements, to wit: a plurality of translating members; means for alternately bringing into action the trans lating members provided with two controlling pistons; a pressure supply conduit provided with branches each connected to one of said pistons and containing a controlling valve; and a motor for each of said valves connected with a separate pressure supply conduit.

18. A control mechanism for the selective translating members of a die case position ing mechanism, the same comprising the following elements, in combination, to wit: a plurality of translating members; means for bringing the translating members alternately into active position including two designating pistons; a ported tracker bar; a pressure supply conduit controlled by a port in said tracker bar and communicating with each of said pistons; two valves each located in the line of communication of one of the pistons and its supply conduit or port; and a piston for each valve connected through a pressure supply conduit with a separate port of the tracker bar.

FRANK HINMAN PIERPONT.

\Vitnesses:

HERBERT D. JAMEsoN, R. F. WILLIAMS.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G.

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