US2903699A - Clamp nailing apparatus - Google Patents

Description

Sept. 15, 1959' A. MAZZOLA CLAMP NAILING APPARATUS Filed Jan. 11, 195'? 2 Sheets-Sheet 1 57 59 A/Vff/O/V) MAzzozA BY INVENTOR.

Sept. 15, 1959 A. MAZZOLA CLAMP MAILING APPARATUS 2 Sheets-Sheet 2 Filed Jan. 11, 195'? INVENTOR.

A W L 0 N M v y a m A Mv ay United States Patent CLAMP NAILING APPARATUS Anthony Mazzola, Westmont, ill.

Application January 11, 1957, Serial No. 633,677

3 Claims. (Cl. 1--149) My invention relates to new and useful improvements in a clamp nailing apparatus and has for its principal object the provision in an apparatus of this character of a pneumatically ope-rated clamp nailing hammer.

Another object of my invention is in the provision in an apparatus of this character of a supporting structure for the pneumatically operated hammer.

Yet another important object of my invention is in the provision in an apparatus of this character of an adjustable work-piece holder.

Still another object of my invention is in the provision in an apparatus of this character whereby the supporting structure for the pneumatically operated hammer is adjustably mounted with respect to a base for such apparatus.

An equally important object is in the provision of a device of this character whereby the work piece holder is adjustable horizontally with respect to the base and pivotable through an are about a horizontal axis.

The invention consists in the novel combination and arrangement of parts to be hereinafter described and claimed.

Other objects will appear hereinafter.

The invention will be best understood by reference to the accompanying drawings showing the preferred form of construction.

Fig. 1 is a rear elevational view of my clamp nailing machine;

Fig. 2 is a front elevational view of my invention;

Fig. 3 is a side elevational view of my invention;

Fig. 4 is a side elevational view showing the work piece holder in its pivotal position;

Fig. 5 is a fragmentary perspective view of the base and work piece holding structure of my invention;

Fig. 6 is a fragmentary sectional view of the pivot block of the work-piece holder;

Fig. 7 is a fragmentary front elevational view of my clamp nailing hammer;

Fig. 8 is a fragmentary perspective view of my clamp nailing hammer;

Fig. 9 is a fragmentary detailed sectional view taken on line 99 of Fig. 7;

Fig. 10 is a perspective view of a clamp nail associated with my apparatus.

My invention relates to a clamp nailing apparatus employed for clamping together by a suitable clamp nail the mitered corners of picture frames or the like. The purpose of the apparatus is to permit the frame corners to be placed in position on a suitable work piece holder with their mitered corners in confronting relation. The particular type of clamp nail hammer to be hereinafter described is then pneumatically operated to drive the clamp nail into the inner sides of the mitered corners of the frame.

To accomplish the hereinbefore mentioned subject of my invention, I provide a base 10. Mounted in spaced relation upon the base 10 are a pair of plates 11 and 12. These plates 11 and 12 have at one end vertically extended cars 13. At their opposite ends, they provide a A ice vertically extending forwardly arcuated supporting arm 14. These arms 14 have formed therein arcuated slots 15 for the purpose hereinafter explained.

Pivotally mounted on the cars 13 by means of a nut and bolt arrangement 16, are supporting posts 17. These posts 17 are substantially hollow and provide a housing for rods 18. The free ends of the posts 17 have a rotatable head 19 providing threadable connection to the rods 18 which are like-wise threaded throughout their longitudinal length. As such the rods are telescopically threadable to the posts 17. A suitable set screw 20 is provided on the posts 17 adjacent the heads 19 for locking the rods 18 in selected position with respect thereto.

A top plate 21 is provided with depending cars 22, which ears are mounted in slots formed in the free ends of the rods 18 as shown in Figs. 1 to 3. The rods 18 and ears 22 are then pivotally connected by means of a suitable nut and bolt arrangement 23. A top plate 21 on one side thereof and adjacent the ends thereof have welded thereto rearwardly extending and downwardly arcuated supporting arms 24 much like the supporting arms 14 provided on the plates 11 and 12. These arms 24 have formed therein arcuated slots 25 for the purpose hereinafter explained.

The posts 17 have fixedly attached thereto links 26. These links 26 have a nut and bolt connection 27 to the supporting arms 14 through the slots 15 formed therein.

The rods 18 have fixedly attached thereto links 28. These links 28 have a nut and bolt connection 29 to the supporting arms 24 through the slots 25 formed therein as shown in Fig. 3. These links 26 and 218 add rigidity to the posts 17.

The above described arrangement permits the posts 17 and rods 18 to be pivoted about their connections to the plates 11 and 12 and top plate 21 respectively by having the free ends of the links 26 and 28 movable through the slots 15 and 25. Thus the posts 17 and the top plate 21 are pivotable through a horizontal axis and may be then fastened at an angle.

Carried by the top plate 21 is a depending collar 30. This collar 30 provides bracket arms 31 which terminate into a second collar 32. Between the collars 30 and 32 and the bracket arms 31, is an air cylinder 33. This air cylinder 33 has by a suitable conductor 34 communication with a compressed air supply source not shown.

The air cylinder 33 is of any well-known construction and as such has a movable plunger 35 associated therewith. The free end of the plunger 35 is connected by a suitable link 36 to one end of a hammer shaft 37. The hammer shaft 37 is movable through a hollow head 38. The shaft 37 is slidably contained in a head 38, by means of a pin and slot arrangement. The shaft 37 has an elongated slot 39 formed on one side thereof. The head 38 has an internally extending pin 48 carried by one wall thereof and having one end projecting into the slot 39 of the shaft 37. Under such arrangement the shaft 37 may slide in and out of the head 38 a distance equal to the length of the slot 39.

The inner end of the shaft 37 has fixed thereto a driver 41. The lower end of the head 38 tapers inwardly from two sides thereof to a point that is equal in width to the width of the driver 41 as shown in Fig. 7. The head 38 through the tapered sides thereof is slotted as at 42. The driver 41 is of such a length that in its normal position the free end 41' thereof will be adjacent the inner end of the slot 42 as shown in Fig. 9.

The shaft 37 has coiled thereon between the head 38 and the nut 43, a coil spring 44. This spring resists th movement of the shaft 37 into the head 38.

Embracing the tapered sides of the head 38 is a guide bracket 45. This guide bracket 45 has enlarged sides 46 which cover the lower end of the slot 42 as shown in Fig. 8. This bracket is attached to the head 38 by means of the screw 46. The purpose of such bracket 45 will hereinafter become apparent.

One side wall of the head 38 is provided with an opening 47 which has communication with the. slot 42 formed in the head 38. Extending from this opening 47 and into the slot 42 is one end of a tension spring 48. This spring 48 is attached to the head 38 by the screw 46' which also attaches the bracket 45 to the head as seen in Figs. 7 and 8.

The operation of the above described pneumatically operated hammer is as follows:

A suitable clamp nail 49 (see Fig. is inserted into the slot 42 of the head 38. The sides 46 of the guidebracket 45 act to position the clamp nail 49 in such slot. The nail is of such a length that it will pass the end of the tension spring 48 which is extending through the opening 47 and into the slot 42 as hereinbefore described. The tension spring 48 will hold the clamp nail in its inserted position. When the plunger 35 and the air cylinder 33 is expelled outwardly therefrom, the shaft 37 will move into the head 38. The head 38 will be retarded when it engages a piece of work held by a workpiece support hereinafter described. The driver 41 will engage the clamp nail 49 and by continuous movement of the shaft 37 into the retarded head 38 will drive the clamp nail 49 into the mitered corners of the picture frame or the like.

To maintain the direction of travel of the plunger 35 in its downward movement, I have provided a guide rod 59. This guide rod 50 is carried by the collar 32 and is slotted as at 51. Adapted to ride in this slot 51 is a projection of the link connection 36 between the plunger 35 and the shaft 37.

In cooperation with the pneumatic clamp nailing means as hereinbefore described, I provide a work piece support structure. This support structure comprises a plate 52 slidably supported by the base 10. The ends of the plate 52 underride flanges 53 of side mountings 54. These mountings 54 are attached to the base 10 by means of screws 52' or the like. As such the plate 52 is slideable beneath the flanges 53 transversely of the length of the base it The front wall of the base 10 has secured thereto a vertical extension 55. This extension 55 has a threaded aperture formed therein and through which is threaded a positioning screw 56. The opposite end of the screw 56 is journalled in the front wall of the plate 52. Under such an arrangement, as a screw 56 is threaded in or out of the aperture of the extension 55, the plate 52 is slidably positioned on base 10. The screw may be provided with a turn handle or a suitable enlarged head portion for conveniently threading it through the aperture of the extension 55.

Carried by the plate 52 are two spaced apart angle irons 57. The horizontal flange of the irons 57 are attached by screws 58 or the like to the plate 52. The vertical flange of the irons 57, by pins 59 rotatably support a block 60. This block 60 has a rectangular shaped rear section 61 with the top side thereof grooved as at 62, Figs. 2, S and 6. The forward portion of the block 60 is triangular in shape as at 63. Pivotally attached to the rear side of the triangular portion 63 by means of pins 64 are pivot posts 65. These posts 65 have their bottom edges round to correspond to the groove 62 of the rear section 61 as shown in Fig. 6. The posts 65 provide reduced portions 66 which are adapted to be journalled in bearings 67 carried by work supports 68. These work supports 68 have their inner ends mitered as at 69. These work supports 68 provide Work supporting flanges 75 and 71 as viewed in Fig. 5. The bearings 67 provide set screws 72 for fixedly attaching bearings 67 to the posts 65 at any point throughout the longitudinal length thereof.

Threaded into the plate 52 in a vertical relation thereto are stop screws 73 having a head 74 engageable by the flange 71 of the work supports 68 when the supports are in operative position with respect to the plate 52. By the above description and arrangement of parts the vertical alignment of the work supports 68 may be varied by the threaded position of the stop screw 73, when the block 68 is pivoted about its connections 59, as viewed in Fig. 4. By the employment of the posts 65 and the attaching thereof of the bearings 67, the work supports 68 may be adjusted relative to each other to receive various size work pieces or be readily replaced if necessary.

The clamp nail as employed in my invention is shown in perspective in Fig. 10. The nail 49 has laterally extending sides 75 alongits longitudinal edges as shown. Such sides 75 will engage the sides of the head 38 adjacent the slot 42 formed therein. The side edges of the head 38 adjacent the slot 42 may be rabbeted to receive such sides 75 of the clamp nail 49. The sides 75 are held adjacent the head 38 by the guide bracket 45 hereinbefore described.

In operation of the device, the work supports 68 are positioned relative to the post 65' to correspond to any form of mitered corners of the work piece. The supports 68 are then pivoted about the pins 59 as shown in Fig. 4. The work pieces are placed on the supports 68 with their mitered corners in confronting relation and the work pieces are then pivoted back into a position such as is shown in Fig. 3. In Fig; 3 the supports 68 are shown in a substantially vertical relation with respect to the pneumatic hammer means. If it be desired that the clamp nail 49 be inserted into the work pieces at an angle rather than from a vertical'plane, stop screws '73 may be raised from the base 52 so'that' their engagement with the flanges 71 of the supports 68' prevents the supports 68 from returning to a substantially vertical position. Such a result if desired will depend on the size and type of work being performed upon. The air cylinder 33 is then actuated through a suitable switch (not shown), to drive the clamp nail 49 into the mitered corners of the work piece.

As the supports 68 are positioned vertically about a horizontal axis so too is the pneumatic hammering means through the use of the arms 14 and 24- as well as slots 15 and 25 and links 26 and 28 as hereinbefore described. The position of the head 38 with respect to the work support 68 may be vertically regulated through the threaded connection between the'posts-1'7 and the'rods 18 as hereinbefore described.

From the foregoing description it is apparent that I have provided a suitable clamp nail apparatus and work support therefor.

While I have illustrated and described the preferred form of construction for carrying my invention into effect, this is capable of variation and modification without departing from the spirit of the invention. I, therefore, do not wish to be limited tothe precise details of construction set forth, but desire to'avail myself of such variations and modifications as come within the scope of the appended claims.

Having thus described my invention, what I claim as new and desire to protect by Letters Patent is:

1. A clamp nailing machine comprising a base, a plate slidably mounted on said base for horizontal movement relative thereto, a work piece support rotatably carried by said plate, means for horizontally moving said plate and said work piece support relative to saidbase, means on said base for supporting a clamp nailing member above and in spaced relation to-sa-id work piece support, means for vertically adjusting said clamp nailing member relative to said work piece support, and means on said supporting means providing a pivotal connection between said member and said supporting means, whereby said member may be moved through anare about a horizontal axis relative to said base and said supporting means for positioning said member for operative engagement with a work piece on said work piece'support.

2. A clamp nailing machine comprising a base, a stand on said base for supporting a clamp nailing hammer above and in spaced relation to said base, said hammer having a movable hammer shaft depending therefrom, means providing a pivotal connection between said hammer and said stand, means for pivotally connecting said stand to said base, means on said base for supporting a work piece in spaced confronting relation to said hammer shaft, means forhorizontally adjusting said work supporting means relative to said hammer shaft, and means for moving said hammer shaft into engagement with a piece of work supported upon said work supporting means.

3. A clamp nailing machine for jointing the mitered corners of a Work piece, comprising a base, a work piece support carried by said base for supporting the mitered corners of a work piece in abutting relation, means on said base for horizontally slidably positioning said support on said base, means providing a pivotal connection for said support whereby said support may be pivoted through an are about a horizontal axis into work piece 6 receiving position, a clamp nail hammer support carried by said base above and in spaced confronting relation to said work piece support, a clamp nail hammer carried by said support, means on said clamp nail hammer support for adjusting the vertical relation of said hammer to References Cited in the file of this patent UNITED STATES PATENTS 199,579 Rose Jan. 22, 1878 1,014,639 Colwell Jan. 16, 1912 2,543,942 Shaff Mar. 6, 1951 2,774,968 Osborne Dec. 25, 1956

Images