US1587429A - Soldering apparatus - Google Patents

Description

June 1 1926. 1,587,429

G. A. SElB SOLDERING APPARATUS Original Filed p 1918 3 Sheets-Sheet 1 J mm. V V wg jj 24ml", 4 H15 ATTEIRNEY June 1 1926.

G. A. SEIB SOLDERING APPARATUS Original Filed p 1918 3 Sheets-Sheet 2 IDEA |NVENTIIJR WITNEE'ISES K Wa- V HIS ATTDRNEV June 1 1926. 1,587,429

G. A. SEIB SOLDERINC' APPARATUS Original Filed p 1918 3 Sheets-Sheet 5 Q WITNESSES o6 I I INVENTDR of L; 9W J, .1 9 M 3% HIS ATTEIRNEY Patented June 1, 1926.

UNITED STATES PATENT OFFICE.

GEORGE A. SEIIB, O1? ILION, NEW YORK, ASSIGNOR T0 REMINGTON TYPEWBITER COH- PANY, OF ILION, NEW YORK, A CORPORATION OF NEW YORK.

SOLDERING APPARATUS.

Application filed September 23, 1918, Serial 1T0. 255,307. Renewed November 22, 1922.

My invention relates particularly to apparatus or machines for and a method of securing the types or type blocks on the ends of the type bars of typewriting or similar machines by the use of solder, and especially where said type blocks are required to be secured on to the type bars in a certain precise relation; my invention, however, is capable of use in other connections.

My invention has for its principal ob'ects to enable the type block to be-secure on the type bar with precision and at the same time with facility and despatch. I provide means for holding the type block in the precise position with relation to the type bar and type bar segment that it should occupy when in the act of printing in the completed typewriter; means for holding the type bar in its correct relation to the type block means for applying heat to melt solder and for moving the heater out of the way; and also means which in the present instance and preferably, are automatically operated, for applying a cooling agent to the soldered parts. In the present instance said cooling agent is a current of air. I also provide means for turning off the current of air and for turning it on again at the proper time in the next soldering operation. My invention also includes various detail improvements in devices of the general character indicated.

To the above ends my invention consists in certain features of construction, and combinations and arrangements of parts, all of which will be fully set forth herein and particularly pointed out in the claims.

One embodiment of my invention is illustrated in the accompanying drawings, in which I Figure 1 is a side elevation of the device or fixture with a type bar .and segment shown by broken lines in place therein.

Figure 2 is a partial rear elevation of the same.

Figure 3 is a sectional view through the gas burner and connections.

Figure 4 is a top plan view of the device or fixture.

Figure 5 is a sectional detail view, on the line y y of Figure 4, of the means for clamping the type bar segment in position.

Figure 6 is a fragmentary front to rear vertical section on the line at w of Figure 4.

Figure 7 is a front elevation of the device or fixture.

Figure 8 is a fragmentary sectional view to show the clamp that holds the type matrix in position.

Figure 9 is a perspective view of a matrix used in the machine.

In the form shown in the drawings, my type soldering machine comprises a base casting 1 havmg ears 2 whereby it can be bolted to a table or work-bench, and said casting may be hollowed out underneath, as indicated in Figs. 1 and 4 by the broken lines 3. Said base has projecting upward from its upper surface two front posts 4, Figs. 1 and 4, and a rear post 5, these three posts being flattened 01f at their upper ends so as to support and accurately to position a type bar segment.6 which is to become an element in a typewriting machine. The typewriter parts shown in position in the type soldering machine are, except in Fig. 6, indicated by dot and dash broken lines in order to distinguish them from the parts of the soldering machine itself. Each of the posts 4 has a dowel 7 projecting upward therefrom, as best shown at Fig. 5, and these dowels fit into dowel holes in the type bar segments, which holes are provided in said segments in order accurately to fit said segments into the typewriting machines, which machines have dowels for that purpose. It will be perceived that the segment 6 is positioned in the soldering machine by the same dowel holes that are used to position it in the typewriter of which it is subsequently to become a part.

The type bar segment indicated in the drawings, comprises a finished casting having, as seen in Fig. 4, the outline of a segment of a circle defined by the dot and dash lines and includin in its outline an arc of a circle at the ft in Fi 4, and the chord of said circle at the rig t. The areshaped part of the segment has cut therein a series of radial slots 8 of which a few are shown in Fig. 4, and in each of these slots 21. type bar 10 is pivoted on an arc-shaped pivot wire 11, WhlCh wire is laid in a suitable arc-shaped slot in the segment. With the segment in the position shown in the drawings, these type bars would normall stand upright from their pivots 11 but eac of them is capable of being turned down to the position shown in Fi 1; and when any type bar is so turne down it passes t rough a type guide 12, Figs. 1 and 4, which guide consists essentially of a forked bracket bent up from a plate 13 which is secured by screws 1 to the upper face of the segment 6. Just before reaching the guide 12 each of the type bars is bent at an angle depending on the position of the particular type bar in the segment 6, and such that the right-hand end of the type bar, as viewed in the drawings, would point directly toward the right, that is to say, toward the front of the soldering machine. Each of the type bars is made with an car 15 to enter the type guide 12 to guide the type bar accurately in the last part of its stroke. It will be understood that the position of the type bar shown in Figs. 1 and 6 corresponds to the printing position in the typewriting machine, in which position said type bar is in contact with a rib or anvil 19.

The type block 16 (Figs. 1, 6 and 7) in typewriting machines of the character indicated in the drawing consists of a block of steel which has two raised types projecting therefrom, one being an upper caseand the other a lower case character, said types being on the underside of the type block when said type block is in the position shown in the drawings. As seen in side view, each of these type blocks is rectangular in outline and as seen in end view (Fig. 7) the lower part of the type block is wider than the upper part, that is to say, the right and left-hand side walls of it slope upward and inward; and a longitudinal slot 17 is milled into the type block from above. The type bar 10 is stamped out of sheet metal and fits into this slot where it is designed to be secured by soldering; and it isthis soldering operation that it is the purpose of the present machine to perform in a rapid and perfeet manner.

In order to secure the type bar segment 6 firmly in the fixture or soldering machine, two clamping devices are provided, cooperating with the two posts 4. A detail of one of these devices is shown in Fig. 5. A bolt 18 has a projecting arm or head 20 adapted to press the segment 6 down against the post 4, said bolt being slidably mounted in a vertical hole 21 in the base casting 1. The lower part of said hole is of reduced diameter, as shown, and the lower part of said bolt is also of reduced diameter to lit into the hole, thus leaving on the bolt and in the hole two shoulders between which a helical spring 22 is compressed, said spring tending to move the bolt upward. At its lower end said bolt is provided with screwthreads which screw into a nut 23, the hole 2-1 in which does not quite reach to the bottom of the nut. A hole 25 is drilled into the bolt 18 from the lower end thereof and a spring 26 inserted in said hole is compressed between the upper end of said hole and a block or plunger 27, said spring pressing said plunger against the bottom of the hole 24 in order to produce friction between the bolt 18 and the nut 23. Said nut has a handle 28 inserted in a suitable hole therein and projecting horizontally therefrom and by which said nut can be turned through part of a rotation. Two stop pins 30 and 31 project upward from the casting 1, Figs. 4 and 7, into position to limit the turning motion of the clamp arm 20 to something like a quarter turn. In the drawing the clamp is shown in clamping position with the arm 20 in contact with the stop pin 31. If the handle 28 be pulled around toward the front of the machine, the nut 23 will be turned on the bolt 18 to loosen the clamp, which will be elevated by the spring 22. As soon as said clamp is loose enough the friction due to the spring pressed plunger 27 will cause the bolt 18 to turn with the nut 23 until it. is arrested by the stop pin 30, at which time the clamping arm 20wi ll be out of the way of the segment 6. It will be noted that as the operator faces the machine there are before him two handles 28. one projecting toward the right and the other toward the left, and preferably one of the bolts 18 has a right-hand and the other a left-hand screw thread, so that if the two handles 28 be simultaneously drawn toward the front of the machine both clamps will be loosened and turned out of the way of the segment, whereupon that segment can be replaced by another. The two handles will then be pushed back toward the rear of the machine. The first effect of the turning of the handles will be to turn the, arms 20 until arrested by the pins 31, after which the nuts 23 will turn on the bolts 18 and draw the arms 20 down into clamping engagement with the segment 6. It will be perceived that the clamping and unclamping operations are effected with a minimum of time and attention by the operator.

In order to rovide for positioning the type block 16 with precision in the soldering machine, there is provided for each such type block amatrix 32, Figs. 6 and 8, consisting of a rectangular plate of metal but cut oil at one corner 33 and having therein an exact intaglio impression 34 ot' the types on that particular type block, so that said type block can he set on the matrix with the types in said intaglio impression and thereby located in the exact relative position that said types should have in the machine when in printing position. It will be understood that there is one of these matrices for each type bar 10 and type block 16, so that if the typewriting machine has forty-two type bars there will be forty-two of these matrices. One of said matrices 1s shown in position in the soldering machine only in Figs. 6 and 8. It will be perccrved that it is necessary-to locate these matrices in the soldering machine with precision and also that means he provided for inserting the matrices and removing them very readil A matrix holding device includes a-lolock 35, Figs. 4 and 6, which is secured by screws 36 to a lug 37 on the upper face of the base casting 1, which lug is machined off for the purpose. The plate or block 35.1s accurately positioned by two dowels 38, the forward one of which passes through around hole and the rear one through a slot 40 in the block 35. The forward part of the block 35 projects upward and is of rectangular outline, and a guiding or positioning piece 41 is secured to the rear vertical wall of this projection by screws 42, Fig. 6, the piece 41 projecting above, the upper surface of the block. Said piece 41 has a lug 43, Fig. 4, projecting forward from its upper edge midway of the length of said piece 41. A second guide or positioning piece 44 is similarly secured to the right-hand wall of the block 35 and it has at its ends two lugs 45 projecting toward the left. Four posts 46 projectupward from the upper surface of the block 35, these being shown as headed pins inserted in vertical holes in said block, and it is on these posts that the matrix 32 rests when it is in position in the machine, as shown in Fig. 6. Said posts may be secured in place in the block 35 and afterwards ground off true on their tops to give an exact elevation to all of them. It will be perceived that when the matrix is in position in the machine it is in contact with the two lugs 45 on its right-hand edge and with the single lug 43 in the middle of its left-hand edge, the three lugs constituting a three-point positioning means. The matrix is pressed edgewise firmly against these lugs by a spring pressed detent or latch 47, best shown in Fig. 8. This detent is pivoted at 48, in a slot 50 cut vertically at about an angle of 45 with a front to rear vertical plane so that the detent is pressed against the cut-off corner 33- of the matrix, and presses said matrix firmly into engagementwith all three of the lugs 43 and 45. Said the detent when there is no matrix in the machine by pressing against the block 35. Said detent has a horizontal arm which serves as a handle or finger piece to operate it. p

A cut-out 56 is made inthe front part of the block 35 for the operators finger or thumb to facilitate the insertion and removal of the matrix plates 32. It will be perceived that theseplates canbe inserted and removed with great ease and positioned with precision in the machine, the pressure of the spring 52 acting-through the detent 47, serving to position the plate accurately against the positioning lugs Without great care on the part of the operator.

In order to hold the type block accurately and with sufiicient firmness in the impressions .34 in the matrix plate 32, I have provided novel means comprising a yoke-piece or hook 57 consisting of a flat bar of s ring metal bent into the rectangular form s own in Fig. 7 The two ends of this bent bar constitute a sort of jaws which come together in the middle of the upper side of the rectangle and when the bar is in relaxed condition said' jaws tend to come into contact. lVhen a type block 16 is put in position, as indicated in Fig. 7', the two arms of this yoke are sprung apart and are allowed to grip the sloping sides of the type block in the manner indicated. The long sides of the rectangular yoke hang down to the right and left of the forwardly projecting frame parts of the machine, and the lower side or end of said rectangle lies beneath the framework. In the middle of the lower end of the rectangular yoke 57 a block 58 is secured by screws 60 and in the upper side of said block, which comes against the yoke piece 57, a conical depression 61 is made which is continued by a hole extending through the block, and a headed screw 62, passing through said hole and having its head resting in the conical depression 61, is screwed into a weight 63. It will be perceived that the connection between said weight and the yoke-piece 57 is in the nature of a universal joint, and it will be understood that the type block 16 is pressed firmly into engagement with the matrix plate 32 by the weight of the yoke piece 57 itself and of the weight 63. It will of course be understood that the forward part of the machine will either project beyond the. table or work bench or else a suitable hole will be made in the said table to- It will be perceived that this is a floating device pressing the type block into its matrix, said device being subjected to no side stresses but being free to adjust itself to the position of the type block as determined by the matrix and to seat the type block accu rately in its matrix.

In order to damp the oscillations of the weight 63 and yoke 57 it may be desirable to have said weight hanging in a vessel 64 containing oil or other liquid, as indicated in Fig. 1.

I have shown in Figs. 1 and 7, two pins 65 projectin from the right and left-hand sides of the block and a little in the rear of the yoke 57, and also two pins 66 projecting toward the right and left from the base casting l and standing a little forward of the lower part of said yoke-piece 57 in order to prevent accidental displacement of said yoke-piece in the act of connecting it and disconnecting it with and from the several type blocks. It will be perceived that this holding means can be almost instantly applied to the type block and that it holds the type block firmly in position, which position is accurately determined by the intaglio impressions 34, and leaves both hands of the operator free to manipulate other vparts of the machine.

When the segment'6 is inserted in the machine it contains a full set of type bars 10 and these should normally stand upright. In order to retain them properly in that position a type bar rest 67 (Figs. 1, 4 and 7) is provided, consisting of a strip of sheet metal bent into the arc of a suitable circle and secured at its ends by screws 68 to brackets 7 O secured by screws 71 to the sides of the base casting 1, said brackets being upright and offset outward, as indicated. in Fig. 7, to avoid interference with other parts and with the hand of the operator in inserting and removing the segments 6.

In the soldering operations the type bars must be moved one at a time to the position shown in Fig. 1, the free end of the type bar being lightly pressed down into the slot 17 in the type block 16. To this end I have provided a hook 72 bent in such a Way as to forma handle or finger piece 73, and which hook catches in a slot 74 through which, in the ty 'iewriting machine, the type bar is operated. The hook 72 is connected with one end of a tension spring 75, the other end of which is connected with a finger 76 projecting from a yoke 77 made of sheet metal and having two hooks 78 which are bent over the upper edge of a saddle 80 consisting of a strip of sheet metal bent into arc-shape and secured by means of screws 81 to the type rest 67, a spacer or washer 82 (Fig. 4) being provided to space the two strips of metal 67 and 80 apart. The yoke 77 can he slid around to any suiteem-as able position on the saddle 86 to cooperate with the particular type bar that is to be soldered at the moment, and when said type bar is turned down to the position shown in Fig. 1 and the hook 72 is caught in the slot 74 the spring 75 will be under tension to press the free end of the type bar down into the type block. It will be understood that in this position of the type bar its free end is accurately guided by the uide 12 which is fastened to and practical y forms a part of the segment 6. When the solder is melted the spring 75 will press the type bar 10 down against the anvil 19 and not quite to the bottom of the slot 17 in the type block and hold it there while the solder is cooling. It will be perceived that if there is a little looseness of the type bar in the slot 17 the solder will take up such looseness and when it is cool the type block 16 will be positioned with precision on the end of the type bar without any internal strains in the metal. In order to prevent the yoke 77 from being accidentally slid off from the end "of thesaddle 80, two headed stop screws 83 are provided at the ends of said saddle.

I provide a heater for melting the solder and also means for guiding said heater to position to heat the type block and the end of the type bar for that purpose, and back to another position where said heater is out of the way. In the present instance the heater consists of a gas burner 84 of that type which has two branches, each branch provided with a small jet 85 (Fig. 3). This burner is shown in the drawing in the position it occupies when the flame is directed downward to melt the solder, although normally it is held in an elevated position where it is out of the way. Said burner is screwed to a nipple 86 (Fig. 3) which in turn is screwed into a trunnionlike cross-piece 87, which cross-piece has a nipple 88 projecting therefrom at an upward and backward inclination. A hole through said nipple connects with the nip ple 86 and burner 84 and said hole has inserted therein a metal tube 90 to which is connected a rubber tube 91 which in turn is connected with'the source of gas.

The gas burner 84 and its described connections are supported on guiding devices, which will now be described. A bracket 92 stands uprightfrom the rear part of the base casting 1 to which it is secured by screws 93: and said bracket at its upper end is inclined forward, terminating in two cars 94- (Fig. 2) in which is journaled a transverse rock shaft 95. A forwardly projecting arm or link 96 has its hub 97 mounted on said rock shaft and connected therewith by a key 98 and set screw 99 (Fi 1). The arm 96 is shown in Fig. 7 as eing double or consisting of two arms extending its toward the front of the machine and the forward end of said arm is branched to form two cars 100 between which the trunnion-like cross-piece 87 is pivoted on pivot screws 101. It will be perceived that the gas burner can be raised and lowered by raising and lowerin the arm 96. In order always to bring the flame to the ri ht height a stop screw 102 (Fig. 1) is threa ed through a lug 103 of the arm 96 and is an rested by a lug 104 of the bracket 92. The upward motion of the arm is limited by a stop lug 105 on the hub 97 which is adapted to strike against the upper part of the bracket 92.

In order to hold the burner 84 normally in its elevated position out of the way, a spring 106 is connected at its upper end to an arm 107 projecting rearward from the hub 97 and at its lower end to a pin 108 projecting from the bracket 92.

In order to control the rocking of the trunnion 87 and gas burner about the pivots 101, said trunnion has secured thereto an upwardly inclined arm 110, to the upper end of which is pivoted a guide link 111, the rear end of which is pivoted to a bracket 112 which is secured by a screw 113 (Fig. 2) to a lug 114 of the bracket 92. The construction is such that the arm 96 and link 111 are approximately parallel and the rela tion of the four pivots of said arm and link are such that when the burner 84 is down' in its operating dposition, shown in Fig. 1, said burner is hel vertically in such position as to direct its flame against the type block 16, and that when said burner is moved by the spring 106 to its upper position the burner will be inclined downward and somewhat toward the rear of the machine, bringing the flame into a position where it does no harm and does not interfere with the operators hands in manipulating the mechanism. It will be erceived that the mechanism described guldes the heater to and arrests it at position to melt the solder and thence to a position where it is out of the way, and this with the minimum of attention and care on the part of the operator. When he wishes to melt solder he merely pulls down the arm. 96 asfar as it will go and when sufficient heat has been applied he has merely to let go of it.

I have provided means for applying a cooling agent to the freshly soldered joint, which agent in the present instance consists of a current of air directed against the solder joint. Said current of air, as shown in the present instance, is directed by two hollow posts 115 (Figs. 4 and 7) screwed into the base casting 1. Each of these posts is drilled out from its lower end to form an air passage 116 which, however, reaches not quite to the top of the post, and a small hole or jet 117 is drilled into the side of screwed, are continued downward of smaller f;

diameter through the base casting. 1 to constitute vertical air passages 118, and these are connected near their bottoms; with a horizon tal transverse hole 120v drilled in from the- .j' left-hand side of the casting. A hole 121 the ft-hand part of the casting and through said hole there extends a tube 122, the front end of which is bent to the right and inserted air-tight in the left-hand end of the hole 120, and this tube projects from any suitable air-valve 123, the one here shown being of the sort commercially known as the Powell blow gun. This valve or blow gun has a piece of-pipe 124 projecting rearward therefrom and secured therein, and said pi e passes through and is secured to a brac st 125 which is fastened to the back of the frame by two of the screws 93. The pipe 124 can be connected with any suitab e source of air under such pressure as to'give a suitable blast against the heated and soldered joint. The valve or blow gun 123 in the form shown in the drawings is adapted to be operated by a push button 126. I have not shown the internalconstruction of this valve because it can of course be of any suitable construction.

The blow gun 123 is preferably operated automatically by the removal of the heater from the soldered joint; that is to say, in the form of the machine shown in the drawings, by the upward motion of the arm 96. To this end the shaft 95 is prolonged beyond the left-hand ear 94 and it has rigidly mounted thereon a cam disk 127, here shown as secured in place by a set screw 128 and key 130. The disk 127 has a cam lug 131 projectin from its rear edge and said lug is adapts to depress an arm 132 which is pivoted on a screw 133 to the bracket '92, the cam acting on said arm through a dog 134 seated in an opening in said arm 132 and pivoted thereto at 135. The hole or opening through the arm 132 in which the dog 134 is pivoted, is made with two shoulders 136 one of which limits the turning of said dog about its pivot in one direction and the other in the other direction. The dog is normally held in the position shown in Fig. 1 by a spring 137 connected at one end to. a tail piece on the dog and at the other end to a bracket 138 secured to the arm 132. The construction is such that when the arm 96 rises the cam 131 acts on the dog 134 downward and toward the front of the ma- (Fig. 7) is drilled from front to rear through chine. As the dog cannot turn in that direction about its pivot 135, the cam presses the arm 132 downward and holds it down as long as the arm 96 remains in its up per position. If, however, said arm be slightly depressed at this time, the cam will then act upward and rearward on the dog 134 and on account of friction will turn said dog about its pivot down against the other of the two shoulders 136, allowing the arm 132 to move upward under the pressure of a spring to be presently described; and once the parts are in that position the arm 96 can be allowed to return to its upper position without again turning the dog 134 to its operative position. The depression of the arm 132 turns on the compressed air and it will be seen that this is turned on automatically when the arm 96 first rises, but that it can be turned 0H at any time by giving the arm 96 a slight downward motion and then allowing itto return to its normal upper position.

When the arm 132 moves downward it acts on a plunger 140 mounted to slide in a bracket or housing 141 secured by a screw to the side of the bracket 92. This plunger is set on the downward and rearward inclination shown and it acts on one edge of an arm 142 pivoted to the bracket 92 on a screw 143 and having another edge which presses downward on a longer sliding plunger 144. mounted in two brackets 145 projecting from the bracket 92. Between said brackets the plunger 144 has a collar 146 secured thereto and a returning spring 147 for this train of mechanism is compressed between said collar and the lower bracket 145. It will be perceived that when the arm 132 is operated by the cam 131 the rod 144 is pushed downward and it is this rod which operates the push button 126 of the blow gun. In order to regulate this operation an adjusting screw 148, having a lock nut 150, is screwed into the lower end of the rod 144, and it is this screw that actually depresses the button 126.

The operation of the machine will no doubt be obvious from the foregoing description but it will be briefly recapitulated. The operator would usually have within reach a lot of segments 6, each with its complement of type bars 10 assembled therein. He would also have either a series of boxes or a case with a series of compartments each containing one kind of the type blocks 16 and each having therein, or associated therewith, the appropriate one of the matrix plates 32. He would set one of the segments 6 on the posts 4 and 5, positioning it by the dowels7, and wouldoperate the handles 28 to clamp it in position He .would then place the first -of the matrices 32 in position in the machine and set on it the appropriate type block..16. hai ing solderfand flu'x in its slot 17, and catch it between the jaws of the yoke-picce 57 to hold it in place. He would then depress from its vertical position the first of the type bars 10 and hook the book 72 into its slot 74. He would then pull down the arm 96 as far as it would go, which would properly apply the tlame to the joint to be soldered, and as the solder melted the spring would cause the type bar to settle into its proper place in the slot 17. As soon as the solder was properly melted he would allow the arm 96 to rise, which would automatically turn on the air until that type block was cooled. The first type bar would then be raised to its vertical position, the matrix 32 removed and the next type bar would have its type block soldered on in the same way as the first. If at any time it was desirable to shut off the air between soldering operations this could be done by slightly depressing the arm 96 and letting goof it. It will be perceived that whenever the arm 96 is depressed to apply the flame to the joint the air is automatically shut off, and that it is automatically turned on again when the arm rises; but if the arm 96 be only slightly depressed, the air will be turned off as before, and it will not then be turned on again when the arm rises.

In typewriting machines having type bar segments of the sort shown in the drawings, it is the intention that the body of the type bar shall strike the anvil 19 substantially at the same time that the type strikes the paper, and it will be perceived, therefore, that it is not only necessary that the type block be situated in exactly the right relation to the type bar pivot but also that the face of the type be situated in a definite relation to the plane of the arc-shaped anvil. To this end my soldering apparatus is so designed that the bottoms of the intaglio impressions 34 in the matrix plates 32, corresponding to the faces of the types, are in exactly the position relative to the plane of the anvil that is necessary to bring about the result mentioned. The construction is such that when on the melting of the solder the type bar is drawn down by the spring 75 until it is arrested by the anvil 19, the free end of the type bar reaches almost but not quite to the bottom of the slot 17 in the type bar, as indicated in Fig. 6 of the drawing. It will of course be understood that this space between the edge of the type bar and the bottom of the slot 17, as well as the space between the sides of the type bar and the walls of said slot, will all be filled with solder. Furthermore, the type block will be in exactly the correct relation to the anvil, or to the plane of the anvil, notwithstanding the ordinary inaccuracies of manufacture of the type bar itself, such inaccuracies being compensated for by slight differences in the thickness of the layer of s01- der between the lower edge of the type bar and the bottom of the slot 17. The weighted yoke 57 is of-especial importance in this cons nection as it holds the type block firmly and steadilyin the matrix at exactly the right elevation, determined by said matrix, while,

' larblock or plate whose dimensions are considerably greater than those of the type block so that when the matrix or cradle is set down on the pins 46, said pins gage said cradle or matrix levelly with greater accu racy than would be possible if the type block merely rested on a flat surface, the pins 46 being spaced a comparatively wide distance apart. This matrix plate or cradle is also gaged vertically or up and down of the type by the abutment 43 and it is gaged laterally or sidewise with precision by the abutments 45. Typewriter types are ordinarily made with their cameo faces or printing parts inclined at the edges toward the printing surface, as shown in Fig. 6, and these projecting or cameo portions of the type aregaged with great precision by the matrix in which they fit exactly, the raised part of the type being interengaged with the matrix. It will be noted that the jig or fixture has three kinds of gages for'cooperation with the matrix plates, namely, the pins 46 which gage the plates in level relation, the abutment 43' which gages said plate vertically or up and down of the type, and the abutments 45 which gage said plate laterally.

Moreover, it will be observed that the jig or fixture is provided with gages, namely, the dowels 7 and the posts 4 and 5, for accurately positioning the whole system of type bars with relation to the gages which position the matrices, which matrices in turn accurately gage the ty e blocks.

It will also be observed t at the clamp 57 and the weight 53 hold or fasten or clamp the type to the matrix as rigidly as is required; that is to say, sufficiently so that in practice they do not become displaced as they would without this securing means. The matrix with the type in it and secured in place by the clamp constitute a sort of soldering unit whichcan be disassembled after the solder has cooled by releasing the type from the clamp and matrix. The whole construction is such as to hold a set of types accurately'aligned and precisely fixed in vertical, lateral and level relation in printing position one type at a time while said types are being soldered, and so as to leave the slot in the type exposed so that the type bar can be dropped into it.

It will be perceived that by the use of this machine a set of ty e bars can have their type blocks solderer in position with a maximum of rapidity and of accuracy.

Various changes can be made in the dct-ails of construction and arrangement without .departing from my invention.

What-I claim asnew and desire to secure by Letters Patent, is

1'. In amachine of the class described, the combination with means for holding a type bar and a type block in correct relative position for soldering, of a heater, a pivoted arm on which'said heater is mounted for motion to and from the work,and sto s for limiting the motion of said arm, one 0 said stops arresting said arm in correct position to cause the heater to melt the solder.

2. In a machine of the class described, the combination with means forholding a type bar and a type block in correct relative position for soldering, of a gas burner, a linkage supporting said burner for motion to and from soldering position and to which linkage said burner is pivoted, said linkage including means for automatically turning said burner about its pivot as an incident to the motion of said burner to and from soldering position.

3. In a machine of the class described, the

combination of means for-positioning and holding a type bar segment in place, and

means for positioning and holding any one of a set of loose type matrices, the'last said means including devices for accurately positioning an individual loose matrix and including also a readily releasable device for holding said matrix in place against said positioning devices,whereby an one of a set of loose matrices may be quickly and accurately positioned and held in the machine.

l. In a machine of the class described, the combination with a type matrix for positioning a type block, of a weighted yoke for pressing and holding the type face of said type block into said matrix.

5. In a machine of the class described, the combination with means for positioning and holding a type bar segment, of a support for a type matrix having three-point positioning means for locating a matrix in predetermined relation to said segment for the purpose set forth, and a spring pressed detent or clamp to ,press said matrix against "said three-point positioning means.

6. In a machine'of the class described, the combination with means for positioning a type block, of a freely suspended weighted voke for holding said type block in place in said positioning means.

7. In a machine of the class described, the combination with a type matrix for support- .having two jaws for gripping sai said device pressing said type block against said matrix.

10. In a. machine of the class described, the combination with means for detachably positioning and holding a type bar segment, of means for positioning and holding a type matrix, means for pressing a type block against said matrix, and separate means for holding said type bar in correct relation to said type block for soldering.

11. In a machine of the class described, the combination with a. frame, of a threepoint support on said frame for a type bar segment, and clamping means including a bolt having a projecting arm and a nut, means for producing friction between said bolt and nut, and stops for limiting the turning motion of said bolt.

12. In a machine of the class described, the combination with a frame, of means for supporting and positioning a type bar seg-v mentin said frame, and a clamping device comprising av bolt having an arm, a nut, and a spring-pressed plunger to make friction between said bolt and nut for the purpose set forth.

13. In a machine of the class described, the combination with means for holding two parts in position to be soldered together,

of a gas burner, a pivoted arm on which said burner is mounted for motion toward and from the work, a cam connected to and swinging with said arm, and means controlled by said cam for applying a cooling agent to the soldered joint when the burner is moved away from the work.

l-l-. In a machine of the class described, the con'ibination with means for holding two parts in position to be soldered together, of a heater, means for moving said heater toward and from the joint between said parts, means for cooling the joint, and an automatic connection between said moving means and said means for applying the cooling agent, said connection being releasable by manipulation of said arm to cut off the cooling agent.

15. In a machine of the class described, the combination with means for holding two parts in position to be soldered, of a heater, an arm on which said heater is mounted,

means for applying a cooling agent to the soldered joint, and connections including a cam and a releasable dog between said arm and said means for applying the cooling agent.

16. In a machine of the class described, the combination with means for holding two parts in position to be soldered, of a gas burner, a pivoted arm on which said gas burner is mounted, an air-jet, a valve for said air-jet, and connections including a cam and a releasable dog between said arm and said valve.

17. In a machine for soldering type, the combination of a matrix and means for holding the type face in said matrix comprising a pendant weighted clamp.

18. In a machine for soldering type, means for holding the type upon a suitable support comprising a pendant weighted clamp, and a liquid body in which the weight is immersed.

19. In an apparatus for soldering type blocks on the ends of type bars, the combination of a gas burner, a swinging arm on which said burner is pivoted, and guiding means for causing said gas burner to turn about its pivot during the swinging of said arm to control the direction of the gas flame.

20. In a machine for soldering type blocks on the ends of type bars, the combination with a swinging gas burner, of a cam 131 connected with said burner, an arm 132, a dog 134i pivoted to said arm and operated by said cam, and cooling means controlled by said arm 132.

21. In an apparatus for soldering type blocks on the ends of type bars, the combination with a swinging gas jet, of a cam 131 connected with said jet; an arm 132 operated by said cam; a plunger 140, a pivoted arm 142 and a plunger 144 operated by said arm 132; and an air-valve operated by said plunger 144;.

22. In a machine for soldering type blocks on the ends of type bars, the combination of a support, a series of type matrices, and fixed position determining means and a device for pressing a matrix against said position determining means, whereby said matrices can be mounted one at a time on said support and accurately positioned.

23. In an apparatus for soldering types on type bars, the combination of means for positioning a type bar segment having an anvil, and means including a type matrix and a type holding device for holding a type in a definite relation to said anvil.

24. In an apparatus for soldering types on type bars, the combination of means for positioning a type bar segment having an arc-shaped anvil, and means for holding a type with its printing face in a definite relation to the plane of said anvil, said means includin a removable matrix and a device for hOldll'l" said type against said matrix independently of the type bar.

25. In an apparatus for soldering types on type bars and in which solder is fused for that purpose, the combination of means for positloning a type bar segment having an anvil, means including a type matrix and a type holding device for holding a slotted type block in a definite relation to said anvil, and means for pressing a type bar into the slot of said type block as the solder melts, the said relation between the type block and the anvil being such that when the type bar is arrested by the anvil it will not quite have reached the bottom of the slot in said type block.

26. A soldering jig having means for connection with the type-bar system of a typewriting machine, and also having releasable means for holding sets of types accurately and finally aligned or precisely fixed in vertical, lateral and level relation, in printing positions, one type at a time, while the type-bars are swung seriatim each to its type and soldered thereto in a manner to maintain the alignment and leveling of the types.

27 A type-soldering jig or fixture having means for connection with a typewriting machine, and also having means, including gages, for mechanically and accurately locating a succession of types vertically sidewise and levelly by means of their type-faces relatively to the common center or printing point of the typewriting machine, and holdmg the types while type-bars are successively swung into position for soldering them to the types in a manner to maintain the alignment and leveling of the types.

28. A soldering apparatus for fastening the type-bars to the types of a writing machine, comprising a set of matrix devices, means for fastening the types in said matrix devices, and means for co-operating with said matrix devices for locating the types successively in soldering position.

29. A soldering jig, fixture or apparatus having means for connection with the typebar system of a typewriting machine, and comprising matrix means to co-operate with corresponding means on thetype-faces for mechanically locating the types accurately and fastening them in position during the soldering operations.

30. A soldering cradle for a typewriter type, having formed thereon means for interengaging with the face of the type, whereby the type is accurately locatable with reference to said cradle, means to hold the type rigidly upon the cradle, and a jig having devices for locating said cradle to bring the type mechanically and accurately to printing position vertically, sidewise and levelly preparatory to soldering a type-bar thereto.

31. A type-soldering apparatus comprising means to interengagewith the pressed faces of a set of types, for locating them seriatim accurately at the printing center of a set of type-bars, and means to co-operate with the types to seat them accurately and in level relation upon said locating means and hold them there during "the soldering operations.

32. A type-soldering fixture having means for attachment with the type-bar system of a writing machine, and having a gaging cradle or means to interengage with the face of a type for locating the same, and means for releasably seating said t pe upon said cradle and holding it there wliile a type-bar is soldered thereto.

33. A type-soldering fixture having means for attachment with the type-bar system of a writing machine, and having a gaging cradle or means to interengage with the face of a type for locating the same, and means for releasably seating said t pe upon said cradle and holding it there while a type-bar is soldered thereto, said cradle comprising portions to gage the type both vertically and laterally and in level relation.

34. A type-soldering apparatus comprising means attachable to the type-system of a typewriting machine for gaging the types successively, by engagement with the typefaces thereof, vertically, laterally, and in level relation, and holding the types in such position while the type-bars are swung seriatim to the types and soldered thereto.

35. A type-soldering apparatus comprising means attachable to the type-system of a typewriting machine for gaging the types successively, by engagement with the typefaces thereof, and means for releasably pressing the types individually upon said. gaging means, to bring each type into precisely accurate position vertically, laterally and levelly.

36. A type-soldering apparatus having means whereby it may be connected with the type-system of a typewriting machine, said apparatus having means for gaging successively the types in a set by means of engagement with the type-faces of the types, and releasable means for pressing the types against said gaging means to locate the types accurately vertically, laterally and levelly while the type-bars'are soldered thereto.

37. A temporary mount or cradle for a typewriter type, comprising means for interengaging with cameo portions on the ty eface of the type, and a releasable clamp lbr forcing the type against said mount.

38. A temporary mount or cradle for a typewriter type, comprising means for interengaging with cameo portions on the typeface of the type, and a releasable clamp for forcing the type against said cradle, said Cradle provided with portions to fit locating gages in a soldering jig, whereby-the type may be accurately located in soldering POSI- tion by seating the cradle, with the type thereon, against the gages.

39. A typewriter jig provided with a temorary location-finder in the form of a rame, mount or cradle, to which the face of the type is fitted, and means clamping the type and the location-finder together.

40. A type-soldering apparatus comprising a set of separate location-finding gaging cradles for a set of types for use upon a common set of gages, and means securing the types individually thereto.

41. A typesoldering apparatus comprising a set of location-finding cradles for a set of types, means to secure the types to the cradles, and a jig having gages to co-operate with all of said cradles, said jig having means for connection with the type-bar system or framework of a typewriting machine.

42. A type-soldering apparatus comprising a set of location-findin cradles for a set of types, a jig having a slngle set of gages common to all of said cradles, said jig having means for connection with the type bar system or framework of a typewriting machine, said cradles each in the form of a gageblock having depressed faces or characters to fit to the type-face, and means to secure the types to the cradles.

43. A type-soldering a paratus comprising a set of locationfin ing cradles for a set of types, and a jig having gages to cooperate with all of said cradles, said jig having means for connection with the typebar Stem or framework of a typewrltlng machine, said cradles each in the form of a rectangular gage-block having depressed faces or characters to fit to the type-face, said jig having leveling gages upon which the cradle seats and also gages to locate the cradle vertically and laterally of the type.

44. A type-soldering apparatus comprising a set of location-finding cradles for a set of types, and a jig having gages to cooperate with all of said cradles, said jig having means for connection with the ty bar system or framework of a typewriting machine, said cradles each in the form of a rectangular gage-block having depressed faces or characters to fit to the type-face, said jig having leveling gages upon which the cradle seats and also gages to fit the cradle vertically of the type and gages to fit the cradle laterally of the type.

45. A location-finding mount for a slotted typewriter type, comprising a matrix-faced gage-block and a clamp which holds the type and gage-block together in a manner to leave the slot exposed for soldering a type-bar therein.

46. A type-gaging cradle in the form of a straight-edged rectangular plate, the edge mamas faces thereo said plate having on one broadface beveled devices to interengage with correspond-ing beveled devices on the face of the ty e, for locating the latter vertically, lateral y, and levelly.

47. A typewriter type soldering, apparatus comprising means for gaging the framework of a typewriting machine and also comprising a type-cradle or gage-block and means for clamping the type to said gage-block with the face of the type against the block, and a set of gages to co-operate with the gage-block.

48. A typewriter type solderin apparatus comprising means for gagingt e framework of a typewriting machine, and also comprising a type-cradle or gage-block and means for clamping the type to said gageblock with the face of the type against the block, and a set of gages to co-operate with the gage-block, said gage-block having beveled devices to interengage with corresponding devices formed upon the face side oi the type.

49. A typewriter type-soldering apparatus comprising means for gaging the framework of a typewriting machine, and also comprising a type-cradle or gage-block, said gage-block having beveled devices to interengage with corresponding devices formed upon the face side of the type, and means for clamping the type to force it into registration upon said block vertically, laterally and levelly.

50. A typewriter type solderin a paratus comprising means for gaging t e ramework of a typewriting machine, and also comprising a type-cradle or gage-block, said gageblock having beveled devices to interengage with corresponding devices formed upon the face side of the type, means for clamping the type to force it into registration -upon said block vertically, laterally and levelly, the width of said gage-block being substantially in excess of the width of the type, to contact with said gage-block.

51. A typewriter type soldering apparatus comprising means for gaging the framework of a typewriting machine, and also comprising a type-cradle or gage-block, said gage-block having beveled devices to interengage with corresponding devices formed upon the face side of the type, means for clamping the type to force it into registration upon said block vertically, laterally and levelly, the width of said gage-block being substantially in' excess of the width of the type, gaging devices positioned to contact with said gage-block, the gage-block engaging the gaging devices at points remote from the type, and means being employed to bring the type mechanically into exact rectitude respecting said gage-block.

and gaging devices positioned A soldering unit comprising a typewriter type to be soldered, a gage-block, cradle or location-finder, and a clamp to hold the type releasably against the gageblock.

53. A solderin unit comprising a typewriter type to %e soldered, a gage-block, cradle or location-finder, and a clamp to hold the type releasably against the gageblock, means being included to insure against relative misplacing of the type and gage-block in any direction.

54. A soldering unit comprising a typewriter type to be soldered, a gage-block, cradle or location-finder, a clamp to hold the type releasably against the gage-block,

the dimensions of said gage-block laterally ith and vertically of the type being substantially greater than the corresponding dimensions of the type, and a soldering fixture having gaging means to engage said gage-block at its borders.

55. The method of swinging the blank type-bars of a typewriting machine, one after another to central printing position,

,and there soldering each bar to its type while the latter is rigidly held by other means than the type-bar in. precisely exact printing position relatively to the framework'ot the typewriting machine.

56. A type-aligning apparatus comprising means to gage a type-bar system, a set of similar individual matrix-blocks, each comprising a broad plate having a rectangular form for gaging purposes, and a soldering jig comprising a single set of gages to co-operate with said blocks one after another, each block being removable to give place to a succeeding block upon said gages, and means to hold each type and block in gaged position while the type-bar is soldered thereto.

57. A type-aligning apparatus comprising means to gage a type-bar system, a set of similar individual matrix-blocks, each comprising a broad plate having a rectangular form for gaging purposes, and a soldering jig comprising a single set of gages to co-operate with sald blocks one'after another, each block being removable to give place to a succeeding block upon said gages, means to hold each type and block in gaged position while the type-bar is soldered thereto, said set comprising rests placed close to the edges of the block, the latter being of mammoth dimensions, as compared with the type, and its sides and ends forming gages, and said block having a matrixface, and means to press the type into the matrix, securing microscopic leveling of the type by reason of the comparatively great distance between said block-supporting rests, as compared with the width and hei ht of the type.

igned at llion, in the county of Herkimer and State of New York, this 17th day of September, A. D, 1918.

GEORGE A. SE53.

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