US2083490A - Laying-out device - Google Patents

Description

Patented Junev 8, 1937 `UNlTlID STATI-:s

l LAYING-OUT DEVICE Vitus A. Boker, Minneapolia-Minn. I Application July 31, 1935, Serial No. 33,989

5 Claims.

This invention relates to a device or instrument for locating points on adie plateforlv drilling essary to locate the centers of these holes with 'great accuracy. It is customary to lay out a dia- 0 gram of the centers, the distance between said centers beingdetermined'by trigonometrical or other mathematical calculations. After the distances are determined it has beenthe'common practice to stand the die plate on a carefully finished surface and to mark lines thereon by means of a height gauge which is also placed on said surface. been marked the die plate is turned at right angles on said surface and marks in a direction at right angles to said direction are made, the marks thus crossing to determine the point of said centers. The point is then marked with a center punch and the hole drilled. This is a rather slow and tedious operation.

It is an' object of this invention to provide a device by means of which the center points on a die plate can be quickly located after the distances between them are calculated.

It is a further object of the invention to provide such a device comprising means for positioning the die plate and clamping it into position together with means movable Aover said die plate and carrying al guide such as a drill or punch guide for determining the desired center points.

It is another object of the invention to provide die plate having means thereon forupo'sitioning and holding said plate, a frame carried by and guide member firmly in position.

- 'I'hese and other objects and advantages of the invention will be fully set forth in the following description made in connection with the accom? panying drawings, in which like reference characters refer to similar parts throughout the several views and in which:-

Fig. 1 is a plan view of the frame member rying the guide means;

-Fig. 2 is a vertical section taken on line .2--2 of v Fig. 1 as indicated bythe arrows;

plate, particularly fe.

After the lines in one direction have.

a device comprising a member for supporting a' Fig. 3 is a view in side elevation of Fig. 1, a portion being broken away .and another portion shown in vertical section;

Fig. 4 is avertical section taken on line 4-4 of Fig. 1 as indicated by the arrows;

Fig. 5 is a plan view of the base or supporting member used; and

Fig. 6 is a view in end elevation of the assembled device, certain portions being broken away and others shown in vertical section.

Referring to the drawings, a device is shown comprisinga base member I0. While this member might take various forms, in the embodiment of the invention illustrated it is shownv as a block rectangular in' plan and rectangular in horizontal and vertical cross section. vSaid block as shown thus has plainsurfaces on two sides .thereof at right angles to each other.` Member I0 has portions Illa and IDb upstanding therefrom at two of its sides forming abutments. These portions are at right angles to each other and each has an inner. surface I0c which slopes outwardly from its top downwardly to the flat finished .supporting surface I0d at the top of block I0. Block I0 has formed in its upper portion a T-slot Ille extending longitudinally thereof vparallel to the sides thereof and said block also has another similar T-slot Illf extending thereinto from one side parallel to its ends and communicating withthe end' of slot Ille. The narrow portions of said T-slots extend to the surface Illd. Plates II are secured to member I0 at the outer ends of T-slots |06 and lllf, said plates being secured by screws I2. A screw member I3 has a reduced portion jour,-

naled in' one of the plates II and extends longitudinally in slot Ille centrally thereof, the same4 being threaded in the lower portion of a clamping member I4 which ilts in and is slidable in the slot Ille. Screw I3 has a knurled handle or knob I5 secured to its outer end. It will'be' seen thatby turning handle I5 screw I3 will be rotated and member I4l moved relatively to member I0. v`An other screw member I6 has a reduced portion D threaded in the other plate II and extends longitudinally of and centrally of slot Inf. Screw .member I6 has a knurledhandle or knob I'I secured to its outer end, and said screw exfv' tends through the lower portion of a clamping member I8 slidable in slot Illf. It will be seen that by lturning handle I'I screw I6 will be rotated and member I8 will be moved relatively to member I0. It will also be obvious that mem 'Il'- bers I 4 and I8 are movable toward and froml i abutment members y Member I0 has vertical holes lug therein adjacent the corners thereof which receive the reduced Illa and IIIb respectively.;V

`portions of pins I8 which extend vertically from block` I8.` y

A fram designated 28 is provided comprising a plate of rectangular form with a rectangular opening therein. the same thus having parallel sides and ends. Said frame has bushings 2l therein accurately bored to fit over upper reduced portions I8a of pins I8. Said reduced portions I8a are threaded at their upper ends to o receive knurled clamping nuts 22. 'I he side portions of -frame 28 form guides-for a slide 23 having end portions 23a of considerable length iltting o n the top and the'outer sides of said sides of said frame. l Said sides of frame 28 have rack members 28 inserted Itherein on their under sides' with which mesh pinions 25 carried on a shaft 28 journaled in' member 231` Shaft 26 has secured to its ends the knurled knobs or handles 21. `It will be seen that by turning handles 21 shaft 26 will be rotated and slide 23 will be traversed lengthwise of frame 28. 'I'he intermediate portion of slide 23 has its lower side formed as a dove-tailed guide 23h and a slide 28 has a dovetailed slot fitting guide 23b and movable length-l 25 wise thereon. A gibl 28 is disposed between one side of guide 23h and slide 28. One or more screws 38 are threaded into the side of slide 28 engaging gib 23 so that it can be tightened -when necessary. One side of the intermediate portion of slide 23 is formed as a rack 3i with which meshes a pinion 32. Pinion-32 is securedto a shaft 33 journaled in one side of slide 28, said shaft having a knurled handle or knob 3l secured to its upper end. It will be seen that by 35. turninghandle 34 shaft 33 will be rotated and slide 28 will be traversed lengthwise of slide 23. A headed screw 35 extends through the top of slide 28 and is threaded into the spaced lower portion of said slide,` said screw having its head at the top of said slide where it is accessible for a wrench; Slide 28 has a portion 28a projecting at one side which is bored to receive a bushing 38 having a knurled upper enlarged portion resting on said portion 28a. Bushing 38 is bored to *forni a guide for a drill or other tool.

One side of frame 28 has a scale 31 set therein held by the screws 38 so. that it is flush with the top of said side. One portion 23a is formed with an opening or slot. 23e through which scale 31 is 50 visible and said portion 23a has secured therein a vemier scale 38 cooperating with scale 31. A scale 48 is secured to the top of slide 23, being held by the screws 4I. Slide 28 has a small bracket 42 extending over the top of slide `23 55 cooperating with scale 48. A

, In operation, a die plate in which an opening is to be formed will be supported on surface I8d or on parallels or small accurately machined blocks placed on surface Illd. Two sides of the die plate will be positioned against the surfaces I8c of the abutments I 8a and I8b. Clamping members ILand I8 will then be moved in against the die plate by rotating handles I5 and I1 respectively. The die plate will be firmly clamped in position due to the inclination of the surfaces I8c. In practice this inclination is approximately 5 degrees. When the die plate is thus positioned and clamped the frame 28 which has been removed will be placed in position on the pins I8 and clamped by the nuts 22. Slide 23 can now be moved by the wheels 21 and guide 38 may be brought over the desired point on the plate for one of `the centers. From this point member 36 can be moved-by moving slides 23 and' having secured thereto a Vernier scale 43` Iand 28 to locate the other centers. The scales 31 and 38 are graduated so that-with the vernier scale slide 23 can be moved accurately to thousandths of one inch.V By means of scales I8 and I3 slide 28 can be accurately positioned t'o thousandths of an inch. When member 38 is positioned over the various centers` the slides are clamped in position by turning screws 38 and 35.

'I'he holes in the die plate can then be drilled at oncegusing member 36 as the guide for the drill. The -device then -scrves as a template.

Different bushings 36 can be placed in portion. 28a to suit various sizes of drills. The various centers to be located on the die plate can thus be quickly located' and the holes drilled at once. A 4great deal of time is thussavedin locating the centers of the holes and drilling them. The die is thus accurately and quickly made, frame 28 can be removed and base plate I8 placed on a flat surface or table on one or both of the 'flat sides and the location ofthe holes'made in the die plate checked or other measurements made by means of a height gauge.

From the above description it is seen that applicant has constructed a comparatively simple and very eflicient device for locating various points on a die plate or other member to be drilled or worked upon. 'I'he device isY easily operated and is very accurate and rugged in construction. 'I'he samel has been amply demonstrated in actual practice andA found to be very successful and efficient.

It will, of course, be understood that various changes may be made Vin the form. details, arrangement and proportions of the parts, without departing from the scope of applicants invention, which' generally stated, consists in a device capable of carrying out the objects above set forth in the parts and combinations of parts disclosed and dened in the appended claims.

' What is .claimed is:-

l. A device of the class described having in combination, a base with flat sides at right angles to each other and having a top supporting fiat surface for vreceiving a die plate, means on said member for positioning said die plate and clamping the same in position, a plurality of framereceiving and holding means rigid with said base member, a removable rigid integral openwork frame mountable on said means and above said member in accurate fixed relation thereto, a drill guide carried on said frame, means at each side of said frame operated by a common means'for moving said drill guide on said frame and over said die plate in one direction, means for moving said -drill guide in another direction at right angles thereto so that said guide is movable over substantially the whole area of said surface within said frame, scales on said frame for determiningl the position of said guide and means for clamping said guide in xed position relative to said frame whereby holes to be drilled can be quickly and accurately located and drilled at once in said die plate and said frame subsequently removed so that said base member can be placed on Va flat surface on one or both of said' flat sides and said holes checked. I

2.1A device of the class described having in combination, a base member rectangular in plan having flat sides at right angles to each other and having a top supporting fiat surface adapted i to receive a die plate, means on said member against which said plate may be placed to position it, movable clamping lmeans for clamping said plate against said first mentioned means,

members upstanding from said base plate' adjacent the corners thereof and rigid therewith, a rigid integral rectangular openwork frame fitting on and removably carried by said last mentioned members in fixed relation to and abovesaidbase member. a bar having elongated end portions extending betweenv-the sides of said frame, said end portions fitting over and being slidable longitudinallyof said sides, a shaft extending longitudinally-of said bar,4 pinions on said shaft, racks in said sides of said frame engaged by said pinions for 'moving said bar, a member fitting on said .'bar' and'movable longitudinally thereon, means for moving said member, a drill bushing carried by said Amember and means for clamping said bar and member in fixed position.

3. A device of the class described having in combination, a base member rectangular in plan having fiat, sides at right angles to each other and having a top supporting fiat surface adapted to receive a die plate, means on said member against which said plate may be placed to position it,'movable clamping means for clamping said plate against said first mentionedv means, members upstanding from -said base plate adjacent the corners thereof and rigid therewith, A

a rigid integral rectangularv openwork frame fitting on and removably carried by said last mentioned members in fixed relation to and above said base member, a bar extending across. fitting on and movable along the sides of said frame, means engaging each end of said bar and simultaneously operated for moving said bar longitudinally of said frame, a common means for operating said last mentioned means, a guide means extending longitudinally of said bar, a member fitting said guide means and movable longitudinally thereof, a rack on one side of said bar.y a shaft carried by said member, a pinion secured to said shaft and meshing with said` rack, means for rotating said shaft and pinion, a drill bushing carried by said member at the other side of said bar and means for locking said bar and member in fixed position.

. 3 4. A device kof the class described having in combination, a base memberhaving a top supporting fiat surface adapted to receive a die plate,

means on said member against which said plate may be placed to position it, movable clamping.

means for clamping said plate against said first mentioned means, members upstanding from said base plate adjacent the corners thereof and rigid therewith, a rigid integral rectangular open-work frame fitting on and' removably carried by said last mentioned members in fixed' relation to and I above said base member, a bar extending across.

fitting on and movablev along the sides of said frame, means engaging each end of said bar and simultaneously operated for moving said bar longitudinally of said frame, a memberfitting said bar and movable longitudinally thereof. means for moving said member, a drill bushing carried by said member and means for locking. said bar and member in position.

5. A device of the class described having in combination, a base membei' having a top supporting surfaceA adaptedto receive a .die plate, means on said member against which said plate may be placed to position it, movable clamping means for clamping said plate against 'said first mentioned means, members upstanding from said base plate adjacent the corners thereof and rigid therewith, a rigid integral rectangular openwork frame fitting on and removably carried by said'

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