US689169A - Machine for framing floor-beams - Google Patents

Description

mi. 689,l69. Patented Dec. 17, MN.

c. L. A. DOEPPE.

IAOHIIIE FOR FRAIIIIG FLOOR BEAMS;

(Application mm. an. as, 1901.)

3 Sheets-Shut I.

(I0 lodol.)

Withmeo Patented Doc. l7, I90l.

C. L. A. DOEPPE.

IACI'IINE FOR FHA-INS FLOOR BEAIS.

A umion am Jun. no, 1001. v

3 Shoots-Shoot 3.

(II Model.)

m a L WITNESSL 'S UNITED STATES CHARLES L. A. DOEPPE, OF RICHMOND, VIRGINIA.

MACHINE FOR FRAMING FLOOR-BEAMS.

PATENT Farce.

SPECIFICATION forming part of Letters Patent N 0. 689,169, dated December 17, 1901.

Application filed January 26, 1901. Serial No. 44,942. (No model.)

To all whom it may concern:

Be itknown that I, CHARLES L. A. DOEPPE, a citizen of the United States, and a resident of Richmond, county of Henrico, and State of Virginia, have invented certain new and useful Improvements in Machines for Framing Floor-Beams, of which the following is a specification.

vMy invention relates to framing floorbeams for railroad bridges and trestles; and it has for its object the provision of simple means whereby such floor-beams may be framed with a minimum of labor and of cost.

Floor-beams which are to be placed on railroad trestles and bridges are framed-that is, they have cut in them notches of such depth that a certain thickness of timberis left between the bottom of the notch and the opposite face of the floor-beam. The notches are cut at such a distance apart that when the floor-beams are placed in position on a bridge or trestle the said notches will engage the tops of the longitudinal girders upon which they are to rest. The opposite faces of the floor-beams-that is,the faces to which the rails are to be subsequently spiked-'wi11 then be at a uniform height above the said girders. This framing of floor-beams for a straight track is necessary, because the floorbeams, which are frequently ronghhewn, vary considerably in their thickness. \Vhen a trestle or bridge happens to be on a curve, the notches in the floor-beams must be cut to different depths, so that the said floorbeams when in position may give to the outer rail its proper elevation, and also the difierence in depth of the notches of those floorbeams which are destined for the approach to a curve must have a gradual variation as the curve is approached, so that the elevation of the outer rail may be obtained gradually. Again, in cases where what are known as easement curves are usedthat is, curves whose radius becomes shorter as their center is approached, and vice versait is necessary that the outer rail should be elevated gradually, its highest point being in the center and its least elevation at the ends of the curve. This of course necessitates a gradual raising and lowering of the outer ends of the floor-beams. In framing these floor-beams by ha nd it is necessary to carefully calculate the depth to which each floorbeam to be used on easement curves must be notched, and care must be taken to obtain the proper diflierence in depth between the notches in each floor-beam and to obtain the proper increase or decrease in their diiference as the center of the curve is approached and left. Consequently the correct framing of floor-beams by hand is an operation attended by much labor and great cost; and the object of my invention is the provision of means whereby the correct framing of floorbeams for bridges, trestles, 850., may be effected with expedition and with a minimum of labor and cost.

In order to render clear the following description of my machine and its working, I will first give a brief outline of the manner in which it operates to frame floor-beams. Cutters of a width necessary to cut the notches in the floor-beams are arranged at the proper distance apart on a shaft, the shaft being provided with means whereby it may be rapidly revolved. Circular saws are carried one on each end of the cutter-shaft, their function being to cut the fioorbeam to its proper length. The floor-beam to be framed is placed upon a traveling table, which is adjustable in a vertical plane in order to regulate the inclination of the floor-beam. The traveling table, and consequently the fioor-beam, having been set at its required inclination, the driving mechanism is thrown into gear and the fioorbeam is carried forward to the cutters, which, revolving, cut the required notches in it. If the floor-beam be destined for a straight piece of track, the traveling table is set so that itsuppersurfaceishorizontal. Consequently the bottoms of the notches cut in the floorbeams will be equidistant from the face ofthe said floor-beams, for the said face upon which the rails are to be laid is placed downward in the machine and will therefore have the same inclination as the upper face of the traveling table. While the cutters are notching the floor-beams the circular saws will be cutting off the crop ends. Should the bridge or trestle on which the fioor-beams are to be used form a part of a curve, it will be necessary to cut the notches in each floor-beam to different depths in order to obtain the proper elevation of the outer rail. To do this, the traveling table, which carries the floor-beams, is set to the required inclination, and consequently all floor-beams notched with the table at this inclination will have notches of the required difference in depth. Again, should the bridge or trestle on which the floor-beams are to be used form an approach to a curve or form an easement curve or a part of one it will be necessary to make the difference in depth of the notches in the floor-beams vary as the approach or the curve progresses. To obtain the variation in the case of an approach, the inclination of the traveling table is increased for each floor-beam, or, if this is considered unnecessary, for every few floor-beams, until the floor-beams have received the proper inclination to give to the outer rail its proper elevation, and in the case of easement curves the inclination of the table, and consequently theinclination ofthe floor-beams, isincreased and decreased as the center of the curve is approached and left.

Referring to the drawings which accompany and form a part of this specification, and in which like numerals refer to'like parts in the different views, Figures I, II, and III are views of the machine in front elevation, plan, and side elevation, respectively. Fig. IV is a vertical section of the machine. Fig. V is a detail of the reversing-gear. Fig. VI is a detail, partly in section, of the table-inclining mechanism. Fig. VII is a detail in section of the adjustable heads for carrying the cutter-shaft; and Fig. VIII is a view of the machine in front elevation, showing a modified arrangement of the adjustable traveling table.

In Figs. I,II, III, and IV, 1 1 are guide-beds having guides 2 2. Supported by the guides and movable thereon is the table 3, which is provided with brackets 4 4, having bearings 5 5. 6 is a table provided with trunnions 7 7, which trunnions engage in the bearings 5 5, and so form a pivot on which the table 6 may be swung. The floor-beam to be framed is slid endwise onto the table 6, rollers 8 8, &c., being let into the said table in order to facilitate the placing of the floor-beams thereon. 9 9 are lugs provided with projecting points 10 10, by means of which and the movable clamp 11 the floor-beam may be held in position on the table '6. The clamp 11 is attached to a threaded spindle 12, which engages in a female screw cut through the (5611-- ter'of one of the trunnions 7, the threads of the spindle 12 and of the female screw being what are termed interrupted threads, so that when a floor-beam has been placed in position the clamp 11 may be quickly brought to bear against it and be caused to clamp it by a turn of the spindle 12 through a small are. 13 is a handle by means of which the spindle 12 may be rotated.

In Figs. I, II, and III, 14 represents a floorbeam in position to be framed, and in Fig. IV, 14 represents the same floor-beam after it has been framed, the bottom of one of the the shaft 16 are mounted the saws 19 19, the

cutters 20 20, and the pulleys 21 21, through which, being driven and being connected by means of belts with the driving-pulleys of some motor, the shaft 16, with its cutters and saws, is revolved. The saws 19 19 are set at such a distance apart that they will cut the floor-beam to the required length, and the cutters 20 20 are spaced so that the notches cut by them in the floor-beam may be at the correct distance apart. The cutters may be of any of the common forms designed to cut a slot or notch of uniform depth, those shown in the drawings (see Fig. III) being provided with saw-sections 22 22, which saw-sections out two narrow saw-slots in the floor-beam at a distance apart equal to the width of the desired notch and being also provided with cutting-blades 23 23, which cut out the material between the saw-slots cut by the saw-sections 22 22. The cutter-blades may be plain if the bottoms of the notches are to be plain, or they may have projecting portions if grooves are to be cut in the bottoms of the notches in the floor-beams to allow for rivet-heads, (be. The table 6 is adjusted as to its inclination by means of gearing attached, preferably, to the lower side of the table 3, where it will be out of the way and where it will not be liable to damage from falling timber. To the lower side of the adjustable table 6 is pivoted the rod 24, on the lower end of which are cut screw-threads. This rod 24 passes through the table 3, and its threaded part engages in a female screw cut through the body of the bevel-wheel 25, which is supported on the under side of the table 3 by means of the bracket 26. (See Fig. VI.) Gearing with the bevel-wheel 25 is another bevel-wheel 27, mounted on the shaft 28, which is carried in brackets 29 29, attached to the table 3. the shaft 28 there is also mounted a handwheel 30, by means of which the shaft 28, and consequently the bevel-gear 27 may be rotated. It will be seen that upon rotating the shaft 28 the bevel gear 27 will rotate the bevel-gear 25, and the latter gear will, according to the direction in which it is revolved, raise or lower the rod 24:, the threaded part of which engages threads cut through the body of the said bevel-gear, and it will consequently raise or lower that end of the table 6 to which the rod 24 is pivoted. The extent to which the rod 2% is raised or loweredthat is, the extent to which the table 6 is inclined upon turning the shaft 28is preferably indicated by means of a graduated gage-rod 31, attached to the lower side of the table 6 and which enters a slot 32 cut to receive it in the table 3. Upon this gage-rod may be cut marks, the relation of which to the surface of the table 3 will indicate the degree of inclination of the table 6. I

have the required difi'erence in depth, or so -that they shall be of equal depth-that is to say, the table is given the required inclination or is set in a horizontal position. This having been done, the table 3, carrying the table 6 and the floor-beam, is caused to slide along the guides 2 2, and so carry the floorbeam into engagement with the saws 19 and cutters 20. As soon as the beam has been carried so far that the crop ends have been cut off and the notches have been cut the table 3 is caused to recede, and so bring the beam out of engagement with the saws and cutters. Suppose that the beams which we are about to frame are intended fora straight trestle or bridge. We set the table 6 in a horizontal position. The bottoms of thenotches cut will then be equidistant from the face of the beam--that is, from what is now the lowerside of the beam. If the beams are intendedfor an ordinary curve, the table 6 is given such an inclination that the'notches cut will have the difference in depth required to give to the outer rail of the curve its proper elevation, and every beam required for use on the curve can be correctly notched without resetting the table 6. No measurements need be made on any of the beams. No laying olf is necessary. All that is necessary is first to set the table 6 to the inclination required to give the proper difierence in depth to the notches, the inclination to be indicated by the gage 31, and then to place the required number of beams successively upon the table 6 and pass them under the cutters and saws. If floor-beams are now to be framed for the approach to an ordinary curve or for an easement curvethat isto say, if floor-beams are to be so framed that the dilference in depth of the notches in each beam shall steadily increase as the ordinary curve or as the center of the easement curve is approached and decrease as they are left-the first. beam will have notches whose bottoms are equidistant from the face of the beam, (it being understood that by the face of the beam the face which is lowest while the beam is on the table 6 is referred to, and the surface on which the notches are cut is the true bottom of the beam,) and the beam destined for the commencement of the ordinary curve or for the center of the easement curve will have notches between whose depths there will be the greatest difference. Suppose that it is required to frame one hundred beams for an approach to an ordinary curve and that the elevation of the outer rail of the curve is to be one inch. The difierence in depth between the notches of the beam will increase by approximately one one-hundredth of an inch as the approach progresses. Therefore for the first beam to be framed we set the table 6 in a horizontal position, for the second at such an inclination that there will be a difference of one one-hundredth of an inch in depth between the two notches, for the third a dilference of one-fiftieth of an inch, for the fourth a difference of three one-hundredths of an inch, and so on. In practice this would probably be considered too fine an adjustment, and a given number of beamssay five-would be so framed that the difference in the notches of each would be one-twentieth of an inch, the difference in the notches of the next five beams onetenth of an inch, of the next five three-tenths, of the next five one-fifth, and so on.

In Fig. I the table 6 is shown pivoted at its center. If the depth of the two notches cut in a beam when the table 6 is horizontal is three-quarters of an inch and if now the table 6 be so inclined that the difference in depth of the notches cut in the next beam is half an inch, one of the said notches will be one inch in depth and the other half an inch -that is to say, the depth of one notch will be increased and the depth of the other decreased by .a quarter of an inch. That is equivalent to saying that while we elevate one rail we lower the other an equal amount. By doing so we give to the outer rail the required elevation over the inner one without changing the height of the center of the track. This is considered by some engineers a very important and desirable advantage, as a train running on such a track is not required to climb, the center line of the train always remaining in the same horizontal plane. It will be readily seen that to frame beams by hand for such a track would entail a great amount of labor and cost, as after the necessary calculations had been made each beam would have to be carefully gaged and marked 01f before being framed. If it be desired to so frame the floor-beams that in obtaining the required elevation of the outer rail the said outer rail only is moved from its original horizontal plane-that is, sothat the inner or lower rail is kept in the same horizontal plane throughout the approach or curvethe table 6 of the machine is pivoted at a point in a vertical line with one of the cutters 20 instead of at a point situated at its own center. The machine with the table 6 so pivoted is shown in Fig. VIII, wherein the trunnions attached to the table 6, one of which trunnions is indicated in Fig. VIII by the numeral '7, are in avertical line with one of the cutters 20. The clamp 11, spindle 12, and other parts of the machine are preferably retained in the positions in which they are shown to be in Fig. I. If the notches in the beams are not cut at a distance apart equal to the gage of the track, but at a greater distance apart, as is usually the case, the pivot 33 is arranged to fall in the same vertical plane as that point on the beam at which the inner or immovable rail will be located. Thence no matter at what inclination the beams are framed that point on the beams at which the rail will be located will when the beams are placed in Ito could adjust the latter would be by providing means for vertically adjusting the guides 2 2 or the guide-beds 1 1, to which all mechanisms for operating the tables 3 and 6 would be attached. It has been found that this method of attaining the required adjustment is attended with some objections, and I therefore adopt the former method of making the cutter-shaft 16 vertically adjustable. Owing to the fact that it is most desirable to have cutters of as small a diameter as possible, for the greater the diameter of the cutters the greater is the power required to drive them when in operation, it is necessary to so arrange the heads 17 and the adjustable shaftbearings which they carry that as much head room as possible may be obtained beneath them to allow the beams being framed to pass without fouling. The usual forms of adjust- -able shaft-bearings are not available, for

those which allow suflicient head room take too long to set and others,which can be quickly set, do not allow the required head room. I have therefore devised a special means. for adjusting the shaft-bearings, which means allow the necessary head room and which can be quickly set.

In Figs. I, II, III, IV, VII, and VIII, 34 34 34 are casings, open on one side and at the top and bottom,which are bolted to the flanges 35 of the standards 18 18 18, the open side of the casings being next to the said flanges. Consequently these casings form with the said flanges boxes having neither top nor bottom,

. and inside these boxes are suspended the shaftbearings/the walls of the boxes forming guides forthe latter. In opposite sides of the casings there are cut openings 36 (see Figs. III and'IV) to allow the shaft 16 to pass through. Referring to Fig. VII, 37 is a yoke which carries the brasses 38 38 and which is provided with the threaded spindle 39, the threads of which spindle engage in threads cut in the hub of the hand-wheel 40. The hand-wheel 4O rests upon the top of the cover 41, through which cover a hole is cut for the passage of the spindle 39. It will be seen that upon revolvin g the hand-wheel 40 the yoke 37, carrying the brasses 38 38, will be caused to rise or descend according to the direction in which the hand-wheel is revolved. In order to keep the upper brass 38 in position and bearing on the shaft 16, a pin 42 is passed down the center of the spindle 39, and it is caused to bear upon a plate of hard metal 43, which is placed upon the top of the upper one of the brasses 38. The upper end of the pin 42, which is threaded, engages in a female screw 44, cut in the upper end of the yoke-spindle 39, and it is provided with'a square head, to which may be fitted a wrench or handle for turning the screw. To adjust theshaft 16 to a new position, it is only necessary to give to the three hand-wheels on the three heads revolutions through arcs of equal magnitude.

Having described the manner in which the cutters 20, the saws 19, and the table mechanisms operate, I will explainthe manner in which the floor-beams are advanced to the cutters and saws.

Carried in the brackets 45 45, attached to the guide-beds 1 1, there are shafts 46 46, having out on them screw-threads, which threads engage in female-threaded lugs 47 47, secured to the under side of the table 3. Keyed one on each ofv the shafts 46 46 are worm-Wheels 48 48, which worm-wheels gear with worms 49 49, carried on the shaft 50, which shaft is carried in brackets 51 51 51, attached to the standards 18 18 18. Secured in the shaft are the clutch mechanisms 52 52, which are arranged to engage in loose pulleys 53 54. The loose pulleys are driven by means of belts leading from the motor, one belt being crossed, so that the pulleys 53 54 may be given motions in directions opposite to one another. These directions of motion are indicated by means of arrows in Fig. II. In Figs. II, IV, and V, 55 55 are bell-cranks pivoted on one of the standards 18 and connected with the clutchlevers 56 56. The bell-cranks 55 55 are operated by. means of rods 57 58 to throw the clutches in and out of gear, and the rods in their turn are actuated by means of lugs 59,

60, and 61, attached to the table 3 and which are arranged to strike stops 62, 63, and 64 when the table is in motion, the stop 62 being attached to the rod 57 and the stops 63 and 64 to the rod 58. (See Fig. IV.) The manner in which this mechanism operates the table 3 is as follows: The table being in the position shown in Figs. II and III and a beam having been placed in position on the table 6 and the said table properly adjusted, the pulley 53, which we will suppose is driven by the straight belt, is thrown into gear with its clutch mechanism by pulling the rod 57 by hand in the direction indicated by the arrows. The worm-shaft 50, the worm-gearings, and the screw-shafts 46 46 are at once set in motion. The screw-shafts, revolving in the direction indicated by the arrows andactin g on the female-threaded lugs 47 47, draw the table 3 forward, and consequently draw the beam to be framed into engagement with the cutters and saws. Just after the operation of cutting the notches in the beam and of sawing off the crop ends has been completed the lug 59 (see Fig. V) strikes the stop 62 on the rod 57 and, throwing the said rod back to its original position, throws the pulley 53 out of engagement with its clutch mechanism,

and so checks the forward movement of the beam. At the same time the lug 60 (see Figs. IV and V) strikes the stop 63, attached to the rod 58, and so throws the pulley 54 (which is driven by the cross-belt) and its clutch mech anism into gear. The pulley 54 imparts to the shaft 50 and the screw-shafts 46 46 motions contrary in direction to those which were imparted to them by the pulley 53, and consequently the tables 3 and 6 and the beam are now caused to recede from the cutters and saws. Just as the tables near their first position the lug 61 strikes the stop 64, attached to the rod 58, and, throwing the latter in the direction indicated by the arrow, (see Fig. IV,) throws the pulley 54 out of gear with its clutch mechanism. Both of the pulleys 53 and 54 are now free from their clutch mechanisms, and the tables and beam consequently come to rest. The framed beam can now be removed and another placed in position.

Havingnow described my invention, what I claim, and desire to protect by Letters Patent of the United States, is

1. In a machine of the character described, the combination of standards for carrying a cutter shaft, vertically adjustable bearings attached to the standards, a rotatable shaft mounted in the bearings, means for revolving the shaft, rotary cutters mounted on the shaft one adjacent to each end thereof, guideways, a carrier adapted to reciprocate upon the guideways, a table for supporting the beam pivoted at the middle of its length to the carrier so as to be adjustable as to its inclination in a vertical plane parallel to the cuttershaft, means for adjusting the inclination of the table, and means for reciprocating the carrier, intermittently on the guideways to carry the beam into and out of engagement with the cutters.

2. In a machine of the character described,

the combination of standards for carrying a cuttershaft, vertically adjustable bearings attached to the standards, a rotatable shaft mounted in the bearings, means for revolving the shaft, rotary cutters mounted on the shaft one adjacent to each end thereof, guideways, a carrier adapted to reciprocate upon the guideways, a table for supporting the beam' pivoted to the carrier so as to be adjustable as to its inclination in a vertical plane parallel to the cutter-shaft, means for adjusting the inclination of the table, and automatic means for reciprocating the carrier intermit-v tently on the guideways to carry the beam into and out of engagement with the cutters.

, 3. In a machine of the character described, the combination of standards for carrying a cutter shaft, vertically adjustable bearings attached to the standards, a rotatable shaft mounted in the bearings, means for revolving the shaft, rotary cutters mounted on the shaft one adjacent to each end thereof, guideways, .a carrier adapted to reciprocate upon the guideways,, a table for supporting the beam pivoted to the carrier at the middle of its length so as to be adjustable as to its inclination in a vertical plane parallel to the cuttershaft, means for adjusting the inclination of the table, and automatic means for reciprocating the carrier intermittently on the guideways to carry the beam into and out of engagement with the cutters.

4. In a machine of the character described, the combination of standards for carrying a cutter-shaft, vertically-adjustable bearings attached-to the standards, a rotatable shaft mounted in the bearings, means for revolving the shaft, rotary cutters mounted on the shaft oneadjacent to each end thereof, guideways, a carrier adapted to reciprocate upon the guideways, a table for supporting the beam pivoted to the carrier so as to be adjustable as to its inclination in a vertical plane paral lel to the cutter-shaft, means for adjusting the inclination of the table, endless screw attached to the standards, a rotatable shaft mounted in the bearings, means for revolving the shaft, rotary cutters mounted on the shaft one adjacent to each end thereof, guideways, a carrier adapted to reciprocate upon the guideways, a table for supporting the beam pivoted at the middle of its length to the carrier so asto be adjustable as to its inclination in a vertical plane parallel to the cutter-shaft, means for adjusting the inclination of the table, endless screw-shafts engaging in threaded lugs attached to the carrier, a

drive-shaft, means connectingthe drive-shaft with the endless screw-shafts whereby the driveshaft may rotate the endless screwshafts to reciprocate the carrier, and means for intermittently operating the drive-shaft.

6. In a machine of the character described, the combination of standards for carrying a cutter shaft, vertically adjustable bearings attached to the standards, a rotatable shaft mounted in the bearings, means for revolving the shaft, rotary cutters mounted on the shaft one adjacent to each end thereof, guideways, a carrier adapted to reciprocate upon the guideways, a table for supporting thebeam pivoted to the carrier so as to be adjustable as to its inclination in a vertical plane parallel to the cutter-shaft, means for adjusting the inclination of the table, endless screw-shafts engaging in threaded lugs attached to the carrier, a drive-shaft, means connecting the drive-shaft with the endless screw-shafts whereby the drive-shaft may rotate the endless screw-shafts to reciprocate the carrier, means for setting the drive-shaft ing the shaft, rotary cutters tnounted on the shaftone adjacent to each endthercof, guideways, a carrier adapted to reciprocate upon the guideways, a table for supporting the beam pivoted at the middle of its length to the carrier so as to be adjustable as to its inclination in a vertical plane parallel to the cutter-shaft, means for adjusting the inclination of the table, endless screw-shafts en gaging in threaded lugs attached to the carrier, a drive-shaft, means connecting the drive-shaft with the endless screw-shafts whereby the drive-shaft may rotate the endless screw-shafts to reciprocate the carrier, means for setting the drive-shaft in motion in one directionto bring the beam into engagement with the cutters, means for automatically reversing the motion of the driveshaft to bring the beam out of engagement with the cutters, and means for automatically throwing the drive-shaft out of gear to the shaft, rotary cutters mounted on the shaft one adjacent to each end thereof, guideways, a carrier adapted to reciprocate upon the guideways, a table for supporting the beam pivoted to the carrier so as to be adjustable as to its inclination in a vertical plane parallel to the cutter-shaft, means for adjusting theinclination of the table, endless screwshafts engaging in threaded lugs attached to the carrier, a drive-shaft, means connecting the drive-shaft with the endless screw-shafts whereby the drive-shaft may rotate the endless screwshafts to reciprocate the carrier, at friction-pulley 53 by which the drive'shaft is revolved to move the carrier forward, means for throwing said pulley into gear, a frictionpulley 54 by which the drive-shaft is revolved to reverse the motion of the carrier, means for throwing the pulley 53 out of gear and the pulley 54 into gear simultaneously, and means for throwing the pulley 54 out of gear to bring the carrier to rest.

9. In a machine of the character described, the combination of standards, vertically-adj ustable bearings attached to the standards, a revoluble shaft mounted in the bearings, cutters mounted on the shaft one adjacent to each. end thereof, circular saws mounted one at each end of the shaft, means for revolving the shaft, a carrier provided with and adapted to reciprocate upon guideways, a "table for supporting the beam pivoted to the carrier so as to be adjustable as to its inclination in a 1 vertical plane parallel to the cutter-shaft, means for adjusting the inclination of the table, endless screw-shafts engaging in threaded lugs attached to the carrier, adrive-shaft, means connecting the drive-shaft with the endless screw-shafts whereby the drive-shaft may rotate the endless screw-shafts to reciprocate the carrier, and means for intermittently operating the drive-shaft.

10. In a machine of the character described, the combination of revoluble cutters adapted to notch the beam, means for revolving the cutters, guideways, a carrier adapted to reciprocate u pon the guideways, atable for supporting the beam pivoted at the middle of its length to the carrier soas to be adjustable as to its inclination in a vertical plane parallel to the cutter-shaft, means for adjusting the inclination of the table, automatic means to slide the carrier forward to carry the beam into engagement with the cutters, to reverse the motion of the carrier to carry the beatn out of engagement with the cutters, and to bring the beam to rest.

1 1. In a machine of the character described, the combination of a revoluble shaft, means for revolving the shaft, rotary cutters mounted on the shaft one adjacent to each end thereof, circular saws mounted on the shaft one at each end thereof,guideways, a carrier adapted to reciprocate upon the guideways, a table for supporting the beam pivoted at the middle of its length to the carrier so as to be adjustable as to its inclination in a vertical plane parallel to the cutter-shaft, means for adjusting the inclination of the table, and automatic means for intermittently reciprocating the carrier to carry the beam into and out of engagement with the cutters and saws.

12. In a machine of the character described, the combination ofa revoluble shaft, cutters mounted on the shaft one adjacent to each end thereof, means for revolving the shaft, guideways, a carrier adapted to reciprocate upon the guideways, a table for supporting the beam and pivoted to the carrier so as to be adjustable in a vertical plane, and automatic means for intermittently reciprocating the carrier to carry the beam into and out of engagement with the cutters.

13. In a machine of the character described, the combination of standards for carrying a cutter-shaft, a cutter-shaft, means for revolving the cutter-shaft, rotary cutters mounted on the shaft one adjacent to each end there of, guidewa'ys, a carrier adapted to recipro cate upon the guideways, a table for supporting the beam pivoted to the carrier so as to be adj ustableas to its inclination in a vertical plane parallel tothe cutter-shaft, means for adjusting the inclination of the table, endless tached to the carrier, a drive-shaft, means connecting the drive-shaft with the endless screw-shafts whereby the drive-shaft may rotate the endless screw-shafts to reciprocate the carrier, and means for intermittently operating the drive-shaft.

14. In a machine of the character described, the combination of standards for carrying a cutter-shaft, a cutter-shaft,means for revolving the cutter-shaft, rotary cutters mounted on the shaft, one adjacent to each end thereof, guideways, a carrier adapted to reciprocate upon the guideways, a table for supporting the beam pivoted at the middle of its length to the carrier so as to be adjustable as to its inclination in a vertical plane parallel to the cutter-shaft, means for adjusting the inclination of the table, endless screw-shafts engaging in threaded lugs attached to the carrier, a drive shaft, means connecting the drive-shaft with the endless screw shafts whereby thedrive-shaft may rotate the endless screw-shafts to reciprocate the carrier, and means for intermittently operating the drive-shaft.

15. In a machine of the characterdescribed, the combination of a revoluble shaft, means for revolving the shaft, rotary cutters mounted on the shaft one adjacent to each end thereof, guideways, a carrier adapted to reciprocate upon the guideways, a table for supporting the beam pivoted at the middle of its length to the carrier so as to be adjustable as to its inclination in a vertical plane parallel to the cutter-shaft, means for adjusting the inclination of the table, and automatic means for reciprocating the carrier to carry the beam into and out of engagement with the cutters.

16. In a machine of the characterdescribed, the combination of a revoluble shaft, means for revolving the shaft, rotary cutters mounted on the shaft one adjacent to each end thereof, guideways, a carrier adapted to reciprocate upon the guideways, a table for supporting the beam pivoted to the carrier so as to be adjustable as to its inclination in a vertical plane parallel to the cutter-shaft, means for adjusting the inclination of the table, and automatic means for reciprocating the carrier to carry the beam into and out o engagement with the cutter.

Signed at Richmond, in the county of Henrico and State of Virginia, this 19th day of December, A. D. 1900.

CHARLES L. A. DOEPPE.

Witnesses:

ARTHUR SORIVENOR, EUGENE JONES.

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