US2213011A - Machine for cutting tile and like articles - Google Patents

Description

1940. c. A. MARTIN MACHINE FOR CUTTING TILE AND LIKE ARTICLES Filed Dec. 18, 1939 3 Sheets-Sheet l IIIIIIIIIIIIIIIII ll m'aiggiut'rola WW c. A. MARTIN 2,213,011 MACHINE FOR cuTTiNe TILE AND LIKE ARTICLES Filed Dec. 18, 1939 5 Sheets-Sheet 2 i r 1 II Iiitiiifl liiif f dNVENTQE ma *9 v ATTORN EYS Aug. 27, 1940. c. A. MARTIN MACHINE FOR CUTTING TILE AND LIKE ARTICLES Filed Dec. 18, 1959 3 Sheets-Sheet 3 INVENTOR ATTORNEY S Patented Aug. 27, 1940 UNITE STATES rarer tries Charles A. MartimBnffalo, N. Y.

Application December 18, 1939, Serial No. 309,731

7 Claims. (01. l2523)' This invention relates to a machine for cutting tile for use in buildings but the same may also be employed for cutting other like'articles to suit them for particular purposes.

It is the object of this invention to provide a machine of this character'which is simple in construction and easily operable and which can be readily adjusted for cutting tile or other block articles to suit the size of the article which is being cut. I

In the accompanying drawings:

Fig. 1 is a vertical longitudinal section of a machine embodying a satisfactory form of this invention.

Fig. 2 is a vertical transverse section, on an enlarged scale, taken on'line 2--2, Fig. 1.

Fig. 3 is a side elevation, partly in section, of the means for mounting the article supporting table on the frame of the machine in accordance with this invention, this view being taken along line 3-3, Fig. 2.

Fig. 4 is a fragmentary vertical transverse section, on an enlarged scale, taken on line 4-4, Fig. 3.

Fig. 5 is a complete vertical transverse section, on an enlarged scale, taken on line 55, Fig. 3.

Fig. 6 is a fragmentary cross section, on an enlarged scale, taken on line 6-i5, Fig. 3 and showing one of the table holding catches in its operative position.

Fig. 7 is asimilar view showing the respective table holding catch in its inoperative position.

Fig. 8 is a fragmentary horizontal section taken on line 88, Fig. 5 and showing the respective table holding catch in its inoperative position.

Fig. 9 is a similar view taken on line 9-9, Fig. 5 and showing the respective table holding catch in its operative position.

Fig. 1G is a fragmentary, vertical, transverse section similar to Fig. 6 showing a modified form of clamping means for locking each catch in its operative position.

In the following description similar characters of reference indicate like parts in the several figures of the drawings.

A machine of this character is shown in Letters Patent of the United States, No. 2,180,743, granted November 21, 1939.

The numeral 28 represents the main frame of the machine which may be of any suitable construction. Above the central part of the main frame is arranged a horizontal table 2| upon which is supported the article to be out, which in the present case is assumed to be a building tile or block as shown by dotted lines 22 in Fig. 1.

The cutter for severing this block or tile preferably has the form of a circular blade or saw 23 of suitable abrasive material which rotates about a horizontal transverse axis and is bodily movable vertically relatively to the tilefrom the upper side thereof. This cutter is journaled on the front arm M of vertically swinging rock lever or beam which is pivoted by a transverse rod 25 on v a standard 26 rising from the rear part ofthe main frame. On the rear arm 2i of this lever is mounted a motor or prime mover 28 for driving the circular cutter 23 which motor is preferably electrically operated and transmits motion to the .cutter by a belt 29 passing around driving and driven pulleys til, 3! secured respectively to the shaft of the motor and the shaft of the cutter.

A vertically rocking movement is imparted to the lever 24, 21 for moving the cutter toward and from the tile on the table by means of a treadle 32 arranged lengthwise in the lower part of the frameand pivoted at its lower end thereto by a transverse rod 33 while its front end is provided with a pedal 34, an upright link-35 connecting said treadle with the front arm 2 of said lever, and a spring 36 connecting said treadle with a bracket 31 on the main frame. When the machine is at restth treadle is raised by the springv 36, thereby raising the front arm of the lever together with the cutter mounted thereon so that the latter clears the tile which is to be cut, this upward movement being limited by engagement of the treadle withla stop 38 on the lower part of the main frame. Upon depressing the'treadle by foot pressure against the pedal the cutter "is lowered. into engagement with the tile for cutting the same. Means embodying this invention are provided for mounting the table which supports the tile to be cut so that this table may be moved horizontally relative to the cutter for severing the tile and the table may also be adjusted vertically for adapting the same to tiles of different height or wheels 43 mounted. on the side bars 40 and running on said rails.

Arranged above the carriage is a metal supporting plate 44 which is secured by screws t to the underside of the table which latter is preferably made of wood or similar material so that the cutter will not be injured when coming in contact therewith and also permits of renewing the latter when unduly worn.

The numeral 46 represents two guide legs arranged adjacent to the outer sides or the longitudinal bars 40 of the carriage and secured at their upper ends by screws 4? to the underside of the metal supporting plate 44, as shown in Fig. n. The table supporting plate and guide legs 55 are adapted to move vertically on the carriage but are held against horizontal movement relative thereto by engagement of the inner sides of the legs with the outer sides of the longitudinal carriage bars 40 and by engagement of the front and rear edges of said legs with guide lugs :33, 49 projecting laterally from the front and rear parts of the carriage, as shown in Figs. 3, 4, 5, 8 and 9.

Fastening means are provided for holding the supporting table at different distances relative to the cutter to suit the height of the tile which is being cut and also the diameter of the cutter which is used. The preferred means for this purpose shown in the drawings are constructed as follows:

The outer side of each of the table guide legs 46 is provided with a plurality of stop shoulders 50 which face downwardly and are arranged in vertical rows adjacent to opposite ends of this bar. Arranged lengthwise on the outer side of each guide leg 46 is a longitudinal catch bar 5| which is pivoted at its opposite ends by screws 52, 53 to the front and rear guide lugs 4|, 42 on the respective side of the carriage, as best shown in Figs. 3, 5, 8 and 9. On its inner side each catch bar is provided with a detent flange or nose 54, the opposite ends of which are adapted to engage the underside of the corresponding stop shoulders on the respective guide legs of the table. Each catch bar is turned in the direction for yieldingly holding the detent flange thereof in the path of the respective stop shoulders 50 by a spring 55 connecting an outwardly projecting tail 56 on the respective catch bar with the adjacent part of the rear guide lu s 42, as shown in Figs. 3. 5, 8 and 9.

In the lowermost position of the table the underside of the supporting plate 44 rests on the upper side of the carriage bars, as shown in Figs. 1, 2, 3 and 4, in which position it is best suited for cutting tile of maximum height and using cutting disks of the greatest diameter. When it is desired to cut tile of lesser height or when using a cutter of smaller diameter, the table may be raised one or more steps and then held by the catches between the carriage and the table supporting means.

Fig. 3 shows in dotted lines the table raised one step from its lowermost position and Fig. 5 shows the same position by full lines. As the table is raised one step the projections 51 of the guide legs on which the stop shoulders are formed deflect the detent flanges 54 out of the paths of these shoulders, and when the latter have passed above the detent flanges, the springs 55 turn the catch bars in the direction for engaging the detent flanges underneath the stop shoulders 56, as shown in Fig. 5, thereby holding the table and the tile resting thereon one step higher than its lowermost position. Similarly, the table may be raised another step to engage the detent flanges with the next lower stop shoulders 58 on the guide legs of the table if it is desired to cut tile of still less height or use cutter disks of still smaller diameter. In the drawings two sets of stop shoulders at different elevations are shown on the table guide legs, which permit of adjusting the tile supporting table in three different positions relative to the cutter, but if more adjusting steps are desired or the length of the diiTerent steps require variation the number and position of the stop shoulders may be selected accordingly.

Complete withdrawal of the guide legs from the carriage is preferably prevented by means of limiting stops 53 arranged on the lower ends of the table guide legs and adapted to engage with the underside of the guide lugs 4|, 42, thereby preventing accidental disassembling, of the table and carriage during normal use of the machine.

Various means may be employed for turning the catch bars in the direction for disengaging the detent flanges from the stop shoulders to permit of lowering the table on the carriage, those shown in Figs. 3, 4, 8 and 9 being constructed as follows:

The numeral 59 represents a horizontally turning releasing plate arranged along the inner side of each catch bar and its detent flange and pivoted at its upper end by a vertical pin 60 on the adjacent part of the respective guide leg 46 while its lower end is loosely mounted by a pin (ii on the adjacent lower part of the same guide leg. The free edge of this releasing plate engages with a releasing flange 62 on the adjacent part of the catch bar 5| and at its upper end this releasing plate is provided with a laterally projecting releasing finger or flngerpiece 63.

When it is desired to lower the table from an elevated to a lower position the operator takes hold with his hand of opposite longitudinal edges of the table and the adjacent parts connected therewith and at the same time operates the fingerpieces 63 so as to disengage the detent flanges from the respective stop shoulders, after which the table may be lowered as desired.

In order to avoid accidental disengagement of the detents from the stop shoulders 5!] locking means are provided which positively hold the detent flanges in engagement with the stop shoulders. This may be accomplished by various means, those shown in Figs. 2, 3, 6, 7, 8 and 9 consisting of a clamping pin 64 guided on the inner part of each catch bar 5| to move laterally therein and adapted to engage its inner end with the adjacent part of the respective guide leg 46, and a rotary cam 65 pivoted on the catch bar and engaging with the outer end of the respective clamping pin and provided with an operating handle 66. Upon turning the cam 65 so that its salient face engages with the outer end of the clamping pin, the inner end of the latter will be pressed against the adjacent guide leg 46 and thereby hold the respective detent flange in engagement with the adjacent stop shoulder 50, as shown in Figs. 6 and 9. Upon turning the cam 65 so that its receding face engages the clamping pin then the pressure on the latter is released and the respective detent flange is permitted to move out of engagement with the adjacent stop shoulder 50, as shown in Figs. 7 and 8, leaving the table free to be shifted vertically as required.

If desired the detent flanges may be locked in engagement with a stop shoulder 50 by means of a screw 6'! mounted on the lower part of the catch bar 5| and engaged with the adjacent part of the respective guide leg 46, as shown in Fig. 10.

When placing the tile to be cut on the table the same is engaged on'its front side with a guide 68 arranged on the front part of the table, as shown in Figs. 1 and 2. For the purpose of enabling the tile or article to be. cut in the proper position on the table in a direction lengthwise of the axis of the cutter or from the side of the latter, a gage or scale is provided consisting preferably of a strip 69 which is secured to the front side of the tile guide 68. As the piece to be cut off from a tile is usually removed from the left end of the whole tile or article the gage strip is graduated on its face from right to left in inches, as shown at 10 in Fig. 2, or marked by any other indications of measurement of length. Inasmuch as such measurement must be taken from the left side of the circular cutter 23 and the thickness of the latter varies according to the character of the article or tile which is being cut, means are provided for conveniently adjusting the gage strip lengthwise relative to the table and cutter. This is effected in the present case by providing the gage strip 69 with a plurality of longitudinal slots H and a plurality of fastening screws l2 passing through these slots and secured to the guide 68 on the supporting table. The tile to be cut is placed on the table while the latter is in its forward position, then the rotary cutter lowered the desired extent by depressing the treadle and then the carriage and table are moved backwardly and forwardly for repeatedly engaging the tile with the cutter to produce a kerf therein which severs a piece of the required length from the whole tile. During this cutting operation the distance which the cutter is lowered is wholly dependent on the amount of foot pressure which is placed on the treadle and thus permits of manually adjusting this pressure to suit the character of the material which is being cut, the depth of the kerf which is being cut during any one stroke of the table or to suit other conditions.

These means for adjustably supporting the article to be out are not only very simple in construction and efficient in operation, but the same are also strong and durable and not liable to get out of order and can be quickly and conveniently' adjusted so as to permit of cutting tiles or the like expeditiously and economically.

I claim as my invention:

1. A machine for cutting tile and like article, comprising a main frame, a rotary cutter for cutting said article, and means for presenting said article to said cutter including a horizontal track arranged on said frame, a carriage movable horizontally on said track, a table adapted to support said article and movable vertically relative to said carriage, legs projecting downwardly from said table along said carriage and each provided with a plurality of stop shoulders arranged in a vertical row. and catches arranged on said carriage and adapted to engage said shoulders for hold: ing said table at different heights relative to said carriage.

2. A machine for cutting tile and like article, comprising a main frame, a rotary cutter for cutting said article, and means for presenting said article to said cutter including a horizontal track arranged on said frame, a carriage movable horizontally on said track, a table adapted to support said article and movable vertically relative to said carriage, legs projecting downwardly from said table along opposite sides of the carriage and each leg being provided on its outer side with a plurality of'downwardly facing stop shoulders which are arranged in a vertical row, catches pivoted on opposite'sides of said carriage and each having a detent adapted to engage with a stop shoulder of one of said rows, and spring means for yieldingly holding said catches in their operative position.

3. A machine for cutting tile and like article, comprising a main frame, a rotary cutter for cutting said article, and means for presenting said article to said cutter'including a horizontal track arranged onsaid frame, a carriage mova ble horizontally on said track, a table adapted to support said article and movable vertically relative to said carriage, legs projecting downwardly from said table along opposite sides of the carriage and each leg being provided on its outer side with a plurality of downwardly facing stop shoulders which are arranged in a vertical row, catches pivoted on opposite sides of said carriage and each having a detent adapted to engage with a stop shoulder of one of said rows, and locking means for positively holding said catches in their operative position.

4. A machine for cutting tile and like article, comprising a main frame, a rotary cutter for cutting said article, and means for presenting said article to said cutter including a horizontal track arranged on said frame, a carriage movable horizontally on said track, a table adapted to support said article and movable vertically relative to said carriage, legs projecting downwardly from said table along opposite sides of the carriage and each leg being provided on its outer side with a plurality I of downwardly facing stop shoulders which are arranged in a vertical row, catches pivoted on opposite sides of said carriage and each having a detent adapted to engage with a stop shoulder of one of said rows, and lockingv means for positively holding said catches in their operative position and comprising clamping pins slidable on said catches and adapted to engage its inner end with the adjacent leg of the table, and a manually operable cam pivoted on each of said catches and engaging with the outer end of the respective clamping pin.

5. A machine for cutting tile and like article, comprising a main frame, a rotary cutter for cutting said article, and means for presenting said article to said cutter including a horizontal track arranged on said frame, a carriage movable hori-. zontally on said track, a table adapted to support said article and movable vertically relative to said carriage, legs projecting downwardly from said table along opposite sides of the carriage and each leg being provided on its outer side with a plurality of downwardly facing stop shoulders which are arranged in a vertical row, catches pivoted on opposite sides of said carriage and each having a detent adapted to engage with a stop shoulder of one of said rows, and stops arranged on said legs and adapted to engage with s id carriage for preventing disassembling of said table from said carriage.

6. A machine for cutting tile and like article, comprising a main frame, a rotary cutter for cutting said article, and means for presenting said article to said cutter including a horizontal track arranged on said frame, a carriage movable horizontally on said track, a table adapted to support said article and movable vertically relative to said carriage, legs projecting downwardly from said table along opposite sides of the carriage and each leg being provided on its outer side with a plurality of downwardly facing stop shoulders which are arranged in a vertical row, catches pivoted on opposite sides of said carriage and each having a detent adapted to engage with a stop shoulder of one of said rows, and manually operable means for disengaging said catches from said stop shoulders.

7. A machine for cutting tile and like article, comprising a main frame, a rotary cutter for cutting said article, and means for presenting said article to said cutter including a horizontal track arranged on said frame, a carriage movable horizontally on said track, a table adapted to support said article and movable vertically relative to said carriage, legs projecting downwardly from said table along opposite sides of the carriage and each leg being provided on its outer side with a plurality of downwardly facing stop shoulders which are arranged in avertical row, catches pivoted on opposite sides of said carriage and each having a detent adapted to engage with a stop shoulder of one of said rows, spring means for yieldingly holding said catches in their operative position, and a manually operated shifting device for disengaging each of said catches from the respective row of stop shoulders including an upright releasing plate arranged between each catch and the adjacent leg of the table and pivoted on said leg to turn horizontally for moving this plate toward and from the respective catch and provided with a laterally projecting fingerpiece.

CHARLES A. MARTIN.

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