US2275329A - Stoneworking machine - Google Patents

Description

G. A. SWENSON sToNEwORKI'NG MACHINE Nimh 3,1942.

Filed May 26, 1941 4 SheeiLS-Sheei'l l G. ./Qwensolz,

Marchf3, 1942. Gg-A. swEN'soN sToNwoRKING MACHINE 4 sheets-sheet 2 v 'Filed May 26, 1941 His SWW;

Marcha, 1942. G,A SWENSON l .2,275,329

sToNEwoRKING MACHINE Filed May 26, 1941 Sheets-Sheet 3 o o d vb o o o omo o o o o o o .6 o

j QH-werbsorn,

March 3, 1942-. G, yA. SWENSON 2,275,329

, l STONEWORKING MACHINE Filed May 2e, 1941 21 sheets-sheet 4 g* mw M22-M2 Patented Mar. 3, 1942 UNITED STAT-ES PATENT OFFICE VSTONEWORKING MACHINE Gustave A. Swenson, Champaign, lll.

Application May 26, 1941,'Seral No. 395,283

s Claims. (Cl,V 12s-35) This invention relates to improvements in stone vWorking machines and particularly to stone planing apparatus.

The primary object of the invention is to provide a stone planer in which the stones can be placed, cut and removed with minimum consumption of time.

A further object is to provide a stone planer in which the stones to be cut can be lined up with the planer cutting tools with a minimum loss of time.

Another object is to provide a stone cutting machine in which it is unnecessary to secure the stone to the planer bed by the present day, socalled, dogging-down operation.

Still another object is to provide the planer bed with a removable stone supporting section whereby plural, interchangeable supporting sections used With a single bed will permit one of said sections removed from the bed to be loaded with stone to be cut during the time stone on a second section on the bed are being planed.

Another object of the invention is to provide a planer bed on which the stone to be cut will be moved into proper position relatively to the cutting tool by the pressure exerted by said tool on the stone.

Another object is to provide a planer bed which can be loaded with a number of stone superposed one upon the other.

With these and other objects in View, the invention consists in certain details of construction and combinations and arrangements of parts, all as will hereinafter be more fully described and the novel features thereof particularly pointed out in the appended claims.

In the accompanying drawings:

Figure 1 is a top plan View of a planer -bed constructed in accordance with the invention, a number of stones being illustrated.

Fig. 2 is a longitudinal sectional view on the line 22 of Fig. 1;

Fig. 3 is a transverse sectional view on the line 3-3 of Fig. 1;

Fig. 4 is a top plan view of a modified form of planer bed;

Fig. 5 is an end View of the structure illustrated in Fig. 4;

Fig. 6 is a top plan View of another form of planer bed embodying the present invention;

Fig. 7 is an end view of the bed shown in Fig. 6;

Fig. 8 is a top plan view of still another form of planer bed made in accordance with the present invention;

Fig. 9 is an end view of the bed shown in Fig. 8;

Fig. 10 is a detail sectional view on the line |0|0 of Fig. 8;

Fig. 11 illustrates, in top plan, another modication of planer bed;

Fig. 12 is an end View of the bed of Fig. 11;

Fig. 13 is a sectional view on the line |3|3 of Fig. 11;

Fig. 14 isa perspective view of still another modification of the present invention;

Fig. 15 is a top plan view of the bed of Fig. 14 with stone loaded thereon;

Fig. 16 is an end view of the structure shown in Fig. 15;

Fig. `1'7 is a section on line |1|`| of Fig. 15;

Fig. 18 is a like view with one stone and one end wall section shown in Fig. 17 removed; and

Fig. 19 is a top plan view illustrating the bed of Fig. 14 loaded with a number of comparatively narrow stone.

-Essentially, the present invention contemplates a stone planer bed having a removable upper stone supporting section provided with means for preventing horizontal shifting of said section with respectl to the lower portion of the bed and also provided with one or more recesses in which the stone to be cut is positioned, the formation of the Walls of each recess being such that they will vproperly position the stone with respect to the planer cutting tools. For instance, in the construction of Figs. 1 to 3, there is what is termed a planer bed` base comprising vertically spaced metal plates 29, 2| and the removable upper section 22. In this construction, the upper section is in the form of a broad stone slab. To prevent the upper section shifting its position on the base member 2|, there are a number kof co-operating interlocking elements on said section and base member. In the present instance, these elements consist of apertures 23 in the removable upper Asection adapted to register with and receive pins 24 on the base, although it will be understood'these pins do not interfere with the upper section being raised and lowered with respect to said base. In this connection, it will be observed the lower edges of the ends of the upper section 22 are recessed as at 25 to form a space between said upper section and base for attachment of slings or other elevating devices which are used for placing the upper section on and removing it from the base. In some instances it is preferred to form aplurality of openings 26 in the base member 2| to prevent accumulation of chips orvstone particles. Preferably, the pin receiving holes 23 are provided with bushings 21 supporting closures 28 for said holes, whereby clogging of the holes by chips is also prevented. The top surface of the upper section 22 is provided with one or more longitudinally extending stone receiving recesses 29 and one or both side walls of these recesses are disposed in a vertical plane parallel to the relative movement between the cutting tool (not shown) and bed during the cutting or planing operation whereby a stone or stones positioned against said Walls will be properly positioned with respect to the cutting tool. If desired, the stones may be forced against one side Wall or straight edge E of the recess by Wedge blocks 30 between the stone and opposite Wall of said recess as shown at the left of Fig. 3 or, for planing some shapes, two stones can be forced wedge block 3l between the stones, as shown at the right of Fig. 3. Again, for'other shapes, the stones can be spaced apart by wedges 32 and both forced against one wall of the recess by wedges 33, as illustrated in the middle groove 29 of Fig. 3. To facilitate removal of stone from the upper supporting section 22 of the bed, shims 34 may be used if desired to space the stone slightly off the surface of said section. With the stone secured in the grooves in this fashion it is not necessary to secure the stone at its ends, as by the, so-called, dogging-down method commonly used in the industry. The upper section may be open at one end, but it is preferred to interpose a cushioning member or block 35 between the stone and an end Wall of the section 22 against which the stone will be forced by the pressure of the cutting tool during the planing operation.

As will be appreciated, the pieces of stone can be secured in the grooves 29 very quickly and due to the relationship between the wall or walls of the grooves and the direction of travel of the bed or cutting tool, the stone is necessarily properly positioned with respect to the cutting tool. This is quite simplified compared to the, so-called, dogging-down of the stone on a planer bed because, in accomplishing this, the stone is often forced rst in one direction and then in another, throwing one or the other end of the stone out of position relatively to the cutting tool, thus often requiring considerable time in properly anchoring even one stone. On the other hand, a number of stones can be quickly secured in proper position with the structure of this invention and, in addition, by using two interchangeable upper sections 22, one can be in use while the second is being loaded with the next set of stone to be planed.

In the structures of Figs. 4 to '7, the upper bed section 22 is formed to permit planing of one side face of the stone in addition to the top face thereof. For this purpose, the recesses 29 may each be made of increased depth at its side opposite the straight wall E against which the stone is positioned, as illustrated at 36 in Figs. 4 and 5, or, for comparatively Wide slabs, the stone may project beyond one side edge of the bed section. In each instance, the removable bed section is provided with locking elements 23 for preventing it shifting position on the bed base. In each of the structures of Figs. 4 and 6,'it will be noted that the cushioning block 35, which is positioned between the stone and that end of the bed toward which the stone is forced by the pressure of the cutting tool, is of less width than the stone being operated upon. This causes the stones to pivot, so to speak, on the cushion block under the influence of the pressure of the cutting tool so as to force the side face of the stone against the straight edge or Wall E of the groove. Thus, the pressure of the tool causes the stone to be forced and held in proper position. If desired, the end wall against which the stone and cushion block are forced by the cutting tool may be tapered as at 31 (Fig. 6) toward the straight edge or side wall E of the groove.

In the modification of Figs. 8 to 10, the upper section may take the form of a steel plate 22a provided with wooden cross-members 38 on which are mounted short, longitudinally disposed chany nel bars 39 or angles 40 with the bars or angles l5 against the opposite Walls of the recess by placingv on the several cross timbers alined so that their exterior faces E will constitute the straight edge or wall against which the stone is held. The plate 22a is formed with openings 26 to prevent undue accumulation of stone particles or other foreign matter and the wooden cross members are formed with the bushed openings 23 for the locking pins 24. The end Wall, in this instance, is formed by the beam-like member 4i secured on plate 22a. The cushion block 35 is positioned against this wall 4| and preferably extends transversely the full distance between the channel and angle bars. If desired, the block can be bolted to the end wall 4|.

Figs. 11 to 13 illustrate the upper bed section as being composed of a wood base portion 22b having heavy metal strips 42 attached along its side edges and longitudinally arranged channels 43 attached at points suitably spaced from each other and the side edge strips 42. These channels and strips extend the full length of section 22b and one or both surfaces thereof constitute the straight edge or wall E against which the stone is forced, preferably by Wedges such as used in the structure of Figs. l to 3. In this modification, the end wall may take the form of a channel member 4Ia and the cushioning block 35 may extend entirely across the bed and be fastened to said end Wall member. Openings 26 may be provided for discharging chips and foreign matter and openings 23 are also provided for the locking pins. If desired, the faces E of the channels and strips may be knurled or roughened to prevent slipping of the stone.

Figs. 14 to 19 show a form of upper section especially adapted for loading a number of pieces of stone thereon, one upon the other or in superposed relationship. In this modification, the upper section 22 Which may be of stone, has one side Wall formed with a stepped inner surface, there being three rises, R, R and R2 in the present illustration. Each rise, like the walls E in the other modifications, is disposed in a vertical plane parallel to the line of relative movement between the bed and cutting tool, so that, by positioning the edges ofthe stones one above the other on the several steps, the rises will cause the respective stones to assume their proper positions relatively to the cutting tool when the stones pivot on the cushioning blocks 35 under the influence of the pressure exerted by the cutting tool. The structure of Fig. 14 may be used with wide stone, asshown in Fig. 16, or a number of narrower stones can be arranged side by side, as well as superposed, as shown in Fig. 19. Preferably, spacer blocks are used between the superposed stones and, in the case of narrow stones, as in Fig. I9, lateral spaces are also preferably provided. It is also deemed preferable to taper the end wall 4I toward the stepped wall. However, when loaded with superposed stones for planing, it is necessary that the end wall t! be adjustable in order that its height may be reduced to permit the cutting tool to engage the stones at the lower levels after the uppermost stones have been planed and removed. For this purpose, the end wall 4l is made df sectional construction, there being a base section Mb, preferably integral with the bed section 22 and removable interchangeable upper end sections Mc and Md. Section llc is of a height slightly less than the combined thicknesses of two stones and two shims; section iid is of a height cr thickness slightly less than the combined thickness of one stone and one shim; and permanent section Mb is of a thickness or height slightly less than that of one stone and one shim. The removable sections MC and Md are held in position on fixed section lli? by heavy dowel pins 44 and 45, respectively, pins 45 being somewhat shorter than pins 44. Thus, with three stones arranged one above the other, end' section HC will be used on section Mb, as shown in Fig. 17. After the top stone has been finished and removed to expose the next lower stone, end section dlc is replaced with section Md and, when this second stone has been finished, it is removed, as is also end section 4Id, whereupon, the lowermost stone can be planed. The use of two removable end sections in connection with three superposed 'stones is given merely as an example as it will be apparent that the end sections, and stones placed upon one another, can be increased or decreased in corresponding numbers.

As previously stated, the several modications embody the fundamental features of providing a .removable upper bed section to facilitate and expedite loading and unloading and the provision of the, so-called, straight edge or wall for expediting setting of the stone on said bed section in proper relationship with the planer cutting tool.

What I claim is:

1. A stone supporting bed for stone planers,

comprising upper and lower sections, said upper section having a longitudinally extending stone receiving recess therein, means for releasably interlocking said sections together against relative horizontal movement and for positioning one side wall of said recess parallel to the direction in which said bed and the cutting tool of the planer are moved relatively to each other, and said upper section being movable as a unit with said lower section and removable vertically from said lower section independently of said interlocking means.

2. In a stone planer, a bed formed of upper and lower sections, said sections having co-operating pins and pin openings for locking the two sections together against relatively horizontal movement, said upper section being removable Vertically from the lower section, and said upper section having a stone receiving recess in its top surface with one wall of said recess having a vertical surface disposed parallel to the direction in which said bed and the cutting tool of the planer are adapted to be moved relatively to one another during the stone cutting operation.

3. A stone supporting bed for stone planer machines having a stone receiving recess therein formed with vertical side walls having surfaces disposed parallel to the direction in which said bed and the planer1 cutting tool are moved relatively to each other during the cutting operation, and means for wedging two pieces of stone apart against the vertical side walls of said recess.

4. A stone supporting bed for stone planer machines having an elongated stone receiving recess therein, said recess having opposite side walls with one side wall disposed vertically and parallel to the direction in which said bed and the planer cutting tool are moved relatively to each other during the cutting operation, said recess being of increased depth at its opposite side, and means for retaining a stone against said vertical side Wall and in spaced relation to the opposite side wall of the recess..

5. A stone supporting bed for stone planer machines having an elongated stone receiving recess therein formed with a vertical side wall having a surface disposed parallel to the direction in which said bed and the planer cutting tool are moved relatively to each other during the cutting operation, said recess being yof increased depth at its opposite side and having an end wall tapering toward said vertical side wall, and means for retaining a stone against said vertical side Wall in spaced relation to the oppositeside wall of the recess.

6. A stone supporting bed for stone planer machines having a stone receiving recess in its upper surface, one side wall of said recess being of stepped formation with each rise of said wall having a surface disposed vertically in a plane parallel to the direction in which the bed and planer cutting tool move relatively to each other during the cutting operation, and means for retaining a plurality of stones in said recess against the vertical surfaces of the rises in said side wall.

7. A stone supporting bed for stone planer machines having a stone receiving recess in its upper surface, one side wall of said recess being of stepped formation with each rise of said wall having a vertical surface disposed in a plane parallel to the direction in which the bed and the planer cutting tool are moved relatively to each other in the cutting operation, and one end wall of said recess being of sectional formation with each section tapering toward the stepped side wall, and means for retaining stones against the several rises of said side wall.

8. A stone supporting bed for stone planer machines, said bed having a vertically removable upper section, means for preventing said upper section shifting horizontally with respect to the lower portion of the bed, said upper section having a stone receiving recess therein, one side wall of said recess being of stepped formation with each rise of said wall having a vertical surface disposed in the plane in which the bed and planer cutting tool move relatively to each other during the cutting operation and one end wall of said recess being formed of a series of vertically superposed sections corresponding in number to the number of rises in said side wall, each of said end wall sections tapering in width toward said side wall, and means for retaining stones against the parallel surfaces of the side wall rises.

GUSTAVE A. SWENSON.

Images