US1529387A - Floor-clip-making machine - Google Patents

Description

March 10. 1925.

S. E. AND'ERSON RLooR CLIP MAKING MACHINE 3 Sheets-Sheet 1 Filed Ogt March 10. 1925.

s. E. ANDERsoN FLooR CLIP MAKING MACHINE Filed Oct. 26.11922 3 Sheets-Sheet 2 March 10. 1925.

S. E. ANDERsoN Fnoo's CLIP MAKNG MACHINE Filed oct. 26. 1922 5 Sheets-Sheet 5 Patented Mar.. 10, 1925.

UNITED sTATEs PATENT OFFICE.

FLOOR-CLIP-MAKING MACHIN Application filed October 26, 1922. Serial No. 597,091.

To all whom t may ooncem:

Be it known that I, SIGURD E. ANDERSON,

a citizen of the United States, and a resident of Des Moines, in the county of Polk and State of Iowa, have invented a certain new and usefulFloor-Clip-Making Machine, of which the following 1s a specification.

The object of my invention is to provide a machine for making floor clips such as are used for spacing and supporting in place the joists or binder strips used as a foundation for floors in buildings and houses.

More particularly my object is to provide a machine for ma ing clips of the type illustratedand described in the prior Patent No. 1,381,740, issued June 14, 1921 to Clyde XV. Prickett.

A further object is to provide a machine wherein a long strip may be fed into the machine and cutinto suitable lengths and perforated at their ends, provided with triangular shaped notches at their sides and having their respective ends bent and formed into the proper shape by suitable diemechanisms.

Still a further object is to provide such' a machine wherein a part of the mechanism for performing thev operation just mentioned will be operated from a rot'atably reciprocating shaft, and wherein the remainder of the said mechanism will be operated from the vram of the punch press.

More particularly, my invention contemplates the bending of each length of strip around a plate which is then moved away from the strip to allow the ram to contact with the strip for folding the ends over the central portion ofthe' strips, and providing a pair of guides wherein-the strip will slide to position where it wiil he acted upon by a pair of dies for bendingv the folded strip into its final form.

With these and other objects in view, my inveution consists iu the construction, arrangcment and combination of the various parts of my device, wherehy the objects contemplated are attained, as hereinafter more fulljv set forth', pointed out in niy claims, and iilustrated in the accompanying draw-V ings. in which:

Figura is a front eievation of the ma. chine.

Fig. 2 is a side elevation of the same.

Fig. 3 shows a length of strip such as is used for making the floor clips illustratin the different Operations which are performe upon it.

r-Fig. 4 is a perspective view of a finished c ip.

Figz is a detailed, sectional view through the center of the channel shaped guide member, illustrating the mechanism for perforating, punching, cutting, indenting, and bending the strip.

``Fig. 6 is a detailed, sectional view of'one of the punch members taken onthe line 6-6of Fig. 5.

Fig. 7 is a view of the bottom. of a plunger illustrating vthe triangular shaped dies thereon.

Fg. 8 is a sectional view illustrating'the shearing or cutting mechanism taken on the line 8-8 of Fi 5.

Fig. 9 is a etailed, sectional view illustrating a portion of the bending mechanism and the means for removing the slidable place from engagement with the strips, taken on the line 9-9 .of Fig. 1.

Fig.l 10 is a perspective view of the bendmg mechanism, parts being shown in section.

In the use of my presentl invention it is 'desirable to produce clips similar to those shown in Fig. 4, which are adaptable to be set into a concrete bed in rows, and so alined as to form anchorin means for the sleeper strips to which the oor is nailed.

In eneral the clip when laid in the cement is U-shaped, asshown in Fig. 4, having the central horizontal member 10 with downwardly hent arms 11, the metal being doubled back upon itself at 12 and having the cars or flaps 18 hent or folded over the back 10 as shown.

After the cement has hardened,` the ears 13 are raised to a perpendicular position, so as to extend above the floor and to provide yoke-shaped anchoring means for a strip of Wood which is to he laid between the u 'right cars 13. Nails are driven through t e holes 14 to hold the strips of wood' securely in place.

The clips are placed in the fioor in rows spaced apart and the wooden strips then providea very rigid foundation for a floor.

It is necessary that the'ears 13 be hent shown at A in Fi'g. 3. The.

over, as shown in Fig. 4, in order that they will not form obstructions to the workmen crossing the concrete bed prior to the time of layin the wooden floor.

In orer to faciltate the pushing of the clips into thecement, it is desirable to taper the lower ends of the arms 11 as shown at 15. `It is also necessary to provide the pro- -truding that the clip will remain securely embedded in the cement.

I will now explain the 'diflerent steps necessary in order to produce the finished clips from a long strip of metal, a portion of gu which is shown in Fig. 3.

Fig. 3 illustrates a section of the strip as it would appear after having been made into a complete clip and then straightened out into its original form.

In my machine the holes 14 are first punched in the strip 'in groups of four groups of holes are spaced from each other, a -distance equal to the length of one section of strip.

vAt the same time the notches 15a which produce thebeveled portions 15 are cut in the section of strip just ahead of the mechanism which punches the holes at A, and the section of strip preceding the last mentioned section is severed from the strip, as at B.

During the continuing operationsthe ends of each section will be bent'first on the lines C to form a flat folded ortion of a strip with the portions 12 an 13 on each side folded over the middle portion 10. During the same operation the members 16 will be unched by suitable die mechanisms and finally the outer ends of the folded st-rip will be bent downward on the lines D'to form a complete clip as shown in Fig. 4. a

The machine is constructed generally in the form of a punch press having a base 20 with the inclined bed 21 for receiving the lower dies and a large part of the mechanism for perforating, punching and bending the strip.

The base 20 has the upwardly extending arms 22 having vat the tops thereof the bearings 23 which journal a crank shaft 24. At one end of the crank` shaft 24 is the pulley 25which is driven by a belt 26. On the other end of the Crank shaft 24 is a circular plate 27 having in its outer face a cam slot 28.

` J ournalled at the center of the crank shaft 24 is a pitman 29 on which is resiliently mounted the ram 30 which is designed to receive on its lower face the die members for performing the desired Operations.

The ram 30 travels up and down in the guides 31 which form part of the arms 22. Qn the outer face of the guides 31 on the same side of the machine as the plate 27 are mounted two bearing members 32 designed to receive the connecting rod 33.

cone shaped members 16 in order same side of the machine as the plate 27 is mounted a short lever 38 which is connected to the rod 33 by a short link 39.

On the other end of the shaft 37 is an eccentric pin 40 (Fig. 5). Fixed to the bed 21 below the pin 40 is a bracket 41 which is 1designed to support 'a channel shaped for the perforating mechanism which I will now describe.

The bracket'41 has an upwardly extending sleeve 43 in which is mounted the plunger 44 having the perforating pins or die members 45. The plunger 44 has the bifurcated portion 46 at its upper end designed to receive a connecting rod 47, which is pivoted to the plunger 44 by means of the pin 48,

" and which is pivoted at its upper end on the pin 40.

In the bracket 41 are 'the die holes 49, de-

signed to register with the pins 45 for forming the matrix therefor. lt will be noted that the upper face ofthe bracket 41 forms a continuation of the guide member 42.

Spaced slightly from the perforating mechani'sm just 'described is a punch mechanism E which is composed of the bracket 50 having the upwardly extendingsleeve 51 desi ned to receive the plunger 52.

ccentrically mounted on the shaft 37 above the plunger 52 (Fig. 5) is a disk`53 and journalled on the annular face of the disk 53 is the' connecting rod 54 which is pivoted in the upper portion of the plunger 52 by the pin 55.

' Spaced from the punch mechanism E just described, is an identical punch F, the parts of which are referred to by numbers the same as those used in describing the punch E. The plunger 52 has at its lower end triangular shaped die members 56 which are arranged transversely on the lower face of the plunger 52 with their apexes facing each other as shown in Fig. 7.

Below the die members 56 and in the brackets 50 are triangular shaped lnotches 57 designed to register with the die members 56 and to provide the. matrix therefor.

Spaced slightly from the punch niech-.1- nism F is a bracket 58. having the transverse slot`59 in its lower portion and having the bridge-shaped upWardly-extending member 60 which connects the two port-ions fori'ned by the slot 59. The bridge 60 has a foride member 42 and also to form a matrix Inu shaped lever having the forwardly extend-A .end the arm 65 is curved for a short distance on an are of a circle having the shaft 37 as its center. This' portion of the lever I have designated with the numeral 69.

The lever is bent forwardly below the portion 69 to provide the cam surfaces 70, and therebelow the lever is curved as at 71 on an arc which has the shaft 37 as its center when the arm 65 i's moved rearwardly.

It may be mentioned here that the cam faces 70 are designed to be acted uponby the inner roller 68 when the bifurcated arm 67 moves downwardly. This movement causes the arm 65 to be moved rearwardly until the roller 68 contacts with the 'curved portion 71 when the arm 67 will remain stationary until the lever 67 has moved back to the'cam faces 70.

It will be noted that an intermittent motion is thus provided, for raising the arm 64 at the proper time, in order that the lower cutting blade 72 which is mounted on the outer endof the arm 64, may engage the upper cutting blade 62 in order to shear the strip G. w

It will be noted that the guide member 42 is continued from the bracket 41 to the bracket 58, the bottom of the channel-shaped member being removed as at 73 in order to allow for the punching dies already de-,

scribed.

I will now describe the mechanism for bending the strip. Mounted on the bed 21 is a block 74 which is cut away as at 75 and 75a. The remaining portion of the block 74 I will designate by the numeral 76.'

Mounted in the portion 76 are thepins 77 which have conical heads 78. There are two sets of the pins 77, one at each side of the portion 76 and there are four pins lto each set.

A supporting plate 79 is resiliently mounted above the portion 76 'and has the same longitudinal and lateral dimensions a's the portion 76. Springs 79a are provided to hold the plate 79 at the proper position so that its upper face will be on a level with the channel-shaped guide 42.

Openings 80 are .provided in the plate 79 which register with the pins 77 and into which the pins 77 project. A- forming plate 81 is provided which has at its center the rearwardly extending tail member 82 which is slidably mounted in a slot 83 in the block 74.

Through a slot 84 in the tail piece 82 there is mounted the guide bolt 85 which hoids the plate 81,111 position. The'formmg' plate 81 is spaced a sufi'icient distance above the plate 79 so that the strip Grl may be received between the plates.

It may be mentioned here that a section of strip after being cut off is designed to have its ends bent upwardly around the ends of the plate 81 as a die, and that the plate 81 is then designed to be withdrawn from over the` center of the section of stri in order that the ends may be flattened ddwn against the middle.

I will now describe the mechanism for' performng this latter operation. Mounted on the bed 21 at one end, and the guides 31 Ci at the other end, are the brackets 86 which arelspaced from each other adjacent to the sides of the block 74. i

Mounted near the center of the brackets 86 and spaced slightly above and forwardly of the shaft 37 is a rock shaft 87. Near i the center of the shaft 87 is loosely mounted The rocker in the cam slot 93. The lower end of the cam slot 93 is oflset as at 96.

It will be seenv that as the ram 30 travels downwardly the rocker arm 88 will remain stationaryl until the roller 95 reaches the offset portion 96 of the cam slot 93. The rocker arm will then be rotated on its axis, thus drawing the plate 81 forwardly.

A pair of shafts 97 are mounted on the 'block 74111 the Slots 98 which ,are Semi-Circular in cross section and are held'in lace by bearing caps 99. The shafts 97 a-ve the rearwardly extending turning members 100 which are formed as part of the shaft by -cutting away three-quar'ters of the shaft, theremainin quarter being the 'lower outside quarter s he forward ends of the shafts 97 have pinion teeth' 101 cut therein and rack bars.

ee Figs. 10 vand 5).

102 are extended through slots 103 and 104 in the cap 99 and block 74 respectively.

The rack bars 102 are designed to mesh with the pinion teeth 101.

Short levers 105 are mounted on the shaft 37 above the rack bars 102. The levers 10:) extend in the opposite direction from the 'lever or bifurcated arm 67. The links 106 connect the ends of the lever 105 with the rack bars 102.

It will be seen that as the shaft 37 is rotated in the direction indicated by the arrow 107 in Fig. 9, the rack bars 102 will be pulled i upwardly and the turning members 100 will lio be rotated in the direction indicated by the larrow 108 in Fig. 5. It may be mentioned here that the upper faces of the turning members 100 are arranged on a level with the upper face of the plate 79 and both of the channel members 42.

A gauge 109 is mounted on the bed 21 and so positioned that when the strip G is inserted in the machine the end of the strip under the punches E and F between the blades of the shearing mechanisrn and hetween the plates 79 and 81 near the end of the strip and is stopped by the gauge 109.

It w1ll be seen that the channel shaped guide member 42 will enable the strip to be thus rapidly inserted in the machine. It may be mentioned here that strips of a con'- venient length are used and must be threaded very often into themachine.

The parts are so arranged that as the cam slot 28 forces the link 33 downwardly it will cause the shaft 37 to rotate in `the direction indicated by the arrow 107 in Fig. 9. The perforating mechanism, the two punches, and the shearing mechanism will first punch and shear the strip leaving a portion between the plates 81 and 79 severed from the remainder. These first four elements perform their Operations simultaneously.

An instant after the section between the plates 81 and 79 has been severed, the turning' member 100 will have rotated enough to engage the ends of the severed section and bend them upwardly and will continue to rotate until the ends of the section have assumed the position shown in dotted lines in Fig. 5.

As soon as the ends of the section have taken this position the ram 30 will have descended enough so that the rocker arm 88 is moved and the plate 81 withdrawn from over the section of strip. The lower end of the ram has a portion 110 extended forwardly under the shaft 37. As soon as the plate 81 has been completely withdrawn the lower face of the portion 110 will contact with the ends of the section and press them downwardly until they are folded i flat across the central portion of the section.

The plate 79 will, in the meantime, be

ressed downwardly under the pressure and will allow the pins 77 to protrude and form the indentations 16.

Dies 111 are formed in the lower face of i Fig. 9. The plate 112 engages the upwardly extending ends of the section so that when the plate 81 is withdrawn the sevel'ed' section of the stripI G remains unmoved.v

After the operations just described have "taken place and as the ram 30 moves upwardly, the' plate 81 will move back and push the folded strip rearwardly in the maehine into the slots 113 of the .receiving guides 114. .Theguides are so positioned that the slots 113 will register with the edge of the plate 79.' The .folded strips will ordinarily slide by their own weight into the Islots 113, the bed 21' of the entire mechanism being ltilted for that urpose.

However, if the fo ded strip should stick, the plate 81 will push it on its return movement and push it out of the way. The guides 114 have laterally project-mg portions 115 to form stops or gauges for the strip.

A block 116 is mounted in the bed 21 midway between the guides 114 and so positioned that the folded strip will be centered thereover when it is stopped by the gauges 115. It will be noted that the inner sideof the receivng guides 114 are out away opposite the lateral sides of the block 116 so that thel folded strip, when it assumes its final position, is resting on the block 116 alone.

A matrix embodying a pair of lugs 117 is provided on the face of the ram 30, and the lu s 117 are spaced to loosely fit over the 'si es of the block 116.

Raised letters. V118 may be provided on the lower face of the ram 30 etween the lugs 117 in order to impress on the upper face of 'one of the flaps 13 of the clip, any printed matter, which may be desired, such as for instance the word Patented 1922, etc., as shown at 119 in Fig. 4.

As the ram 30 descends and as the previously described Operations take place upon a severed section and on the end of the re-l maining portions of a strip, the lugs 117 will force the projectin ends of the folded strip downwardly to orm the completed floor clip.

It may be mentioned that the lugs 117 are of such lengths that they will not contact with the block 116. As the lugs 117 force the ends of the folded strip downwardly, these ends will enter the slots 120 which are arranged adjacent to the side of 1,aso,887

zhe block 115 and extend rearwardly therefrom.

As the next folded strip passes downwardly to position over the block, the com'-' pleted clip will be moved off the block and will slide in the grooves 120 to any' suitable receptacle.

It will be seen that I have provided, a machine in which the 'Operations of perforating, unching, indenting, bending, and rebending the clip successively take place and in which a long strip of metal ma be fed and converted into finished clips. e clips may be turned out at the same rate as any simple stamping which is made in an ordinary punch press.

Some changes may be made in the construction and arrangement of the various parts of my invention, without depart'ng from the real spirit and purpose of my invention and it is my intention to cover'by my claims, any7 modified forms of structure or use of mechanical' equivalents, which may be reasonably included within their scope.

i claim as my invention:

- 1. In a machine for making finished floor clips from a strip of metal, a base, a guide for supporting the strip, a shaft mounted above the guide, means for imparting rocking movement to the shaft, 'a perforating mechanism disposed above the uide and operably connected with the sha for perforating a plurality of holes in the strip, means operably connected with the shaft for cutting lthe strip into lengths, means operably connected with the shaft for bending the ends of each stri at substantiall right angles to the centra portion thereo ,w

means for folding the ends flat against the central portion, and means for bendin the end portions thus formed at right ang es to the remaining central ortion, the sald end portions to be bent in t e opposite direction to the bending of the ends of the original length of stri 2. In a maciine for making finished floor clips from a strip of metal, a base, a guide for supportin the strip, a shaft mounted above thev gui e, means for imparting rocking movement to the shaft, means operably vconnected with the shaft for cutting the strip into len ths, means o erably connected with the s aft for ben ing the endsof each strip at substantially right angles to' adapted to Vertical reciprocating movement above the bed, an element for supportmg a strip, a gage spaced laterally for properly positionmg 'the strip over said supportin element, a movable plate spaced above sai supporting. element, turning members arranged at the ends of the plate for. bending the ends of a strip inserted between the plate and the supportin member, the movable plate being adapte to slide back from 76 engagement with the strip, and the ram b eing adapted to fiatten the ends o f the str 1p against the middle while *the plate is in its receded position. V v

4. Ina machine for making finished floor 80 clips from a. strip 'of metal, a bed, a ram adapted to reciprocate vertically above the bed, la resiliently mounted plate on the bed for sup rtingo a strip, a movable plate above sald supporting plate, means for bending the ends of a strip of metal received between the plates around the ends of the movable plate as a die, the ram being adapted to flatten the ends of the'strip upon the middle, the movable plate being adapted to recede from contact with the strip for this purpose, and means for forming lugs on the folded strip, said means including pins mounted be'- low' the resiliently mounted plate, said plate havin openings for allowing the 'pins to pass ough the plate when it' is depressed, the ram having mdentations in its lower face s aced to register with the pins and design to form wlth the pins a set of dies. p

'5. Ina machine for making finished floor clips from a strip of metal, an 'inclin'ed bed, means for folding the ends of -a' strip of metal over the middle thereof, a block mounted on the bed below said folding. w means, a ram, a matrix on the lower face 'thereof and designed to bend the ends of the folded strip over the block as a die, the folded strip being adapted to slide by gravity to position over the die.

6. In a machine for making finished floor clips from a strip of metal, an inclined bed, meanslfor folding the ends of a stri of metal over the middle thereof, a lilock mound on the bed below said foldfilg means, a ram, a matrix on the lower face thereof and designed to bend the ends of the folded strip over the block as a die, the folded strip bemg adapted to slide by gravity' to posrtron over the die, and means for impressm letterin upon the upper face of thev 12 upper olded en o the strip.

7. In a. machine of the class described, mechamsm for punching and cutting stri s 'of the desired length from a, strip 'for ma.

in floor clips, sa1d mechanism including a be a shaft arranged above the bed and arallel thereto, means for imparting roc g movement to the shaft, a pair of dles adapted to unch groups of four holes at points sp along-the 'length of' the strip, vtwo "o vpairs of dies adapted to cut triangular portions from the sidesof the strip and shearing mechanism for cutting the stripv into lengths 8. In a machine of the class described, mechanism for punching and cutting strips of the desired length from a strip for making fioor clips, said mechanism including a bed, a shaft arranged above the bed and parf allel thereto, means for imparting rotat-ing reciprocal movement to the shaft, a pair` of dies adapted to punch four holes at lpoints equidistantly spaced along the length of the strip, two pairs of dies adaptecl to c'ut tri angular portions from the sides of the strip at points spaced from the said holes, and shearing mechanism for cutting the strip into lengths, said' mechanism including a fixed knife adapted to engage the upper side of the strip, a moving knife below the strip,

said moving knife being mounted on a bellcrank lever, an arm'fixed to the s'haftl and ex,- tending to the end of the bell crank level', rollers thereon for engaging the lever, the upper end of the level' having cam surfaces so arranged that when the arm swings downwardly the lever will be moved to position for Cutting .the strip.

9. In a device of the class dscribed, :1

a base, an inclined bed thereon, a ram, mechanism for bending lengths of strips into fioor clips, said mechanism including guide means for holding the strip in position, a plate positione-d over the center of the strip, rotatable members at the ends' thereof for bending the ends of the strips at right angles to the center portion thereof around the ends of the plate as a forming die, means for mov ing the plate to a position where the strip is exposed, the ram being adapted to flatten the ends of'the strip against the central portion thereof after the plate has been moved away from the strip, a block mounted on the bed.

below the mechanism just described, guide members for conveyingl the folded strip to a position centered over the block, and a matrix on the lower face of the ram for bending the' folded ends of the strip down in the directiono posite to that in which the original ends are nt.

Des Moines, Iowa, June 21, 1922.

SIGURD E. ANDERSON.

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