US766797A - Saw-guide. - Google Patents

Description

PATBNTED AUG. 2, 1904.

1?'. H. RICHARDS.

SAW GUIDE.

APPLIUATION FILED 00T.`2, 1903.

ITO MODEL.

, IIIIIIIIIIIIZIIIIIIIIIHH Wzve ses.. 676@ No. 766,797. PATENTED AUG. 2, 1904.

F. H. RICHARDS.

SAW GUIDE.

APPLIGATION FILED 0012.2. 1903.

No MODEL. l s SHEETS-SHEET 2.

No. 766,?97. PATENTED AUG. 2, 1904..

P. H. RGHAR'DS.

SAW GUIDE.

APPLIUATION FILED 00122. 1903.

No MODEL. a SHEETS-SHEET a,

UNITED STATES Patented August 2, 1904..

VPATENT OEEICE.

FRANCIS I-I. RICHARDS, OF HARTFORD, CONNECTICUT, ASSIGNOR TOTHE STANLEY RULE 8c LEVEL COMPANY, OF NEW' BRITAIN, CONNECTICUT, A CORPORATION OF CONNECTICUT.

SAW-GUIDE.

SPECIFICATION forming part of Letters Patent No. 766,797, dated August 2, 1904.

Application filed October 2. 1903. Serial No. 175.428. (No model.)

To all 107mm/ '1215 may concern:

Be it known that I, FRANCIS I-I. RICHARDS, a citizen of the United States, residing at Hartford, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Saw-Guid es, of which the following is a specification.

This invention relates to and has for an object to provide improved and eihcient guides `IO for saws for miter-boxes and other wood-sawing mechanisms.

In certain classes of wood-sawing devicesas, for instance, miter-boXes-there is fre- `quently provided a work-table for holding and positioning the work and a table or frame for carrying' and supporting the saw, and upon which frame it is desirable to mount suitable guides for supporting and guiding the sawblade. The present improvement provides 2O plates for engaging each side of the saw-blade over a considerable area, whereby the saw is guided with a small amount of friction. The guides may be mounted in standards, which may be made of one piece and in practice may be cast, having a channel for the passage of the guides.

It is desirable' in certain work to adjust the saw so that it will either be free or will be guided with precision, for which end the present improvement provides means whereby the plates may be moved toward and from each other, and consequently toward and from the sides f the saw-blade, so that adjustment may be had. The plates will be provided with ribs upon their outer surfaces, which ribs will be received by channels in the standards, and upon rotating the standard upon its axis the plates will naturally move upon the interposition of a saw toward or from each other, each plate using its rib as an axis for turning. By this means the axis of the turning' of the plates is brought very close to the guidingfaces, which in the passage of the back and forth in its sawing action will be less liable to permit the plates to bind upon the saw than were the centers at the greater distance away. The standards may be made comparatively inflexible and may be cast, whereby the sawguides after proper adjustment will be free from vibration and the standards will not be liable to be sprung out of shape by hard use or by abuse.

In the drawings accompanying and forming part of this specification a form of my invention is illustrated applied to a miter-box, wherein- Y Figure l is a top view of such box. Fig.

2 is a front view. Fig. 3 is a side view with portions broken away to reveal the interior construction. Fig. a shows a pair of plates in perspective. Fig. 5 is a top view of the end of the beam or guiding-frame. Fig. 6 is a central cross-section through one of the standards and the plates. Fig. 7 is a perspective of the bottom of a cap or plate for supporting the sides of the standard. Fig.

8 is a cross-section through the cap or plate and the tierod. Figs. 9 and 10 are details or diagrams showing the adjustability of the plates one toward the other, and Fig. 1l is a 7o top View of the plate and tie-bar.

The miter-boX frame illustrated herein is designated in a general way by 2O and is shown as comprising a Hoor-plate 21, supported by legs 22 and having a transverse 75 back plate 23. The rear of the frame adjacent to the back plate is provided with an enlarged boss or hub 24, which supports a swivelframe 25, having' a face 26 to run upon a segmental face 27, carried by an apron 28, projecting from the floor of the frame. The back plate has a saw passage-way 29 in the region of the hub 24. The apron is provided with a sector-slot 30, in which a pin 3l may run, the pin being screw-threaded into the frame 25 and carrying a lever 32, whereby the faces 26 2T upon the arm and sector may be clamped together to hold the frame in an adjusted position. Each end of the frame is provided with a socket 33 to receive a stem 90 3a of a saw-guide standard, which standard in the present instance is shown as made of a single piece of Inetal and may in practice be cast. The standard comprises in addition to the stem a block or body p ortion 35, from l which a pair of limbs 36 project, the general outer contour of the pair of limbs being somewhat elliptical. rl`he inner faces of the limbs are provided vwith channels 37 and beveled faces 38, leading away from such channels. The saw-guides in the present instance are comprised of plates 40, each of which has a comparatively broad face 41 for guiding the blade of the saw and a recess 42 to accommodate the back of a backed saw. The recess has a face 44, which will engage the face 45 of the'back of a saw, as illustrated in dotted lines in Fig. 3, which saw is the general form made use of in miter-boxes, although other forms of saw may be used, as the exigencies of any particular case may demand. The channel is also provided with an overhanging lip or flange 46, whereby the plate may be raised upon the back of the saw. Each plate on its face opposite its guiding-face is provided with a rib 47, which may be rigid therewith and in practice may be cast with the plate. rlhe rib is organized to iit in the channel 37. The channel being longer than the rib will permit reciprocation of the plate and will act as a guideway. The rib will act as a pivot for the plate, the channel serving as a pivotsocket. The face 48 of the plate may be accommodated in such turning by the bevelface 38 and limited in such movement thereby. The limbs 36 are shown as provided at their upper or free endswith pockets 49 and screw-holes 50. Caps 5l may be placed upon such limbs and are here shown as provided with flanges 52 to enter such pockets and with screw-holes 53, mating with the screwholes 50, whereby by means of screws 54 the plates may be held onto the limbs of the standard and the samebe made comparatively rigid. One of each pair of plates may be provided with a notch 55 to receive a latch 56, controlled by a spring 57, to suspend the saw-blade above the working position. rhe plates are not shown as having any mechanical connection one with the other, but when the saw-back occupies 'the channels 42 of both of the plates the face 45 of the saw will rest on the face 44 of the plate, which is held by the latch, and the face or overhang 46 of the other plate will rest upon the back of the saw.

As herein illustrated, two of the standards are employed, one at each end of the frame, whereby one of them is located at each side of the work-table.v Each of the top caps 51 is provided with a boss 60, which has a passage-way 61 through it to receive a tie-rod 62, secured in the present instance by means of set-screws 63 to impart rigidity and support to the standards.

Forthe purpose of adjusting the plates upon the saw-blade either to adjust them from the blade to accommodate a thick blade or to permit free action where the absolute precision of the work is not demanded or to adjust them toward the saw-blade toaccommodate a shorter blade' or to guide the blade with greater precision or to accommodate a thinner blade may be accomplished by rotating the standards in the sockets 33. t will be seen in Fig. 10 that the standard is so located that the limbs 36 have their centers on a line designated by 64, which is in such figure transverse to the line or plane of .the saw when in position designated by the line 65, so that the axes of the plates which are within the ribs 47 and designated by 66 are on such transverse line, and a large amount of space is shown between the guiding-faces 41 of the opposing plates; but in Fig. 9 it will be seen that the limbs have been rotated upon the spindle and that the axes 66 of such plates have been shifted so that the line 67, passing through both of said axes, will be at an angle to the former line 64. Upon the plates being rotated upon their axes to bring the guiding-faces 41 upon a plane parallel to the plane of the saw-blade the plates or their guiding-faces will be brought closer together and precise guiding will be had.

The screw 63 constitutes a pivot-point engaging the tie-bar, and such pivot is axially coincident with the stem 34 of the saw-guide standard, so that in the adjustment of the side-s of this standard by rotation on the stem to adjust the plates or guides the support or tierod is given a bearing upon such axial line or line of rotation, and there will be no clamping. or binding due to the presence of the support, it being enabled to perform its functions equally well in Whatever position of adjustment the plates are placed, thus supporting them at all times with an equal amount of rigidity, and the faces 75 permit the plate to turn upon the tie bar or rod.

Some convenient means may be employed to clamp the stems in the frame 25. In the present instance there`is shown a hole 68 in such frame and a slot 69, running from such hole to the socket 33. The clamping-screw 7 0 will run from side to side at the region of such slot and upon being screwed will clamp the stem, and consequently hold the standards in their adjusted position.

It will be apparent that many changes may be made in the device without departing from the spirit of my invention.

The apron illustrated herein is claimed in my copending application, Serial N o. 175,425, filed October 2, 1903.

Having thus described my invention, I claim- 1. The combination with a table, of a sawguide support comprising a pair of comparatively inflexible standards held in parallelism and having channels on their adjacent faces, and saw-guide plates provided with ribs pivotally mounted in said channels.

2. In a wood-sawing machine the combination of a table; a pair of standards each comprising two channeled members; and a pair of saw-guide pilates each having a rigid rib adapted `to be carried by and to turn in a channel in one of said standards.

The combination with a table of a pair of standards carried thereby,each comprising a pair of members having their adjacent sides channeled; of a saw-guide plate for each member having a sawguiding' face on one side and upon the other a rigid rib shorter in length than the length of the channeland adapted to be carried thereby to reciprocate therein as a guideway and also to turn therein as a pivot-socket.

t. A saw-guide for a miter-box comprising a pair of plates each having' a saw-guiding face, a saw-back recess, a plain face opposite such saw-guidingfacaa rounding rib on said plain face, and a standard having a pair of limbs provided with rounding' channels to receive the ribs and plain faces sloping away from said channels.

5. A saw-guide comprising' a base; a pair of parallel standards integral therewith, channels in the adjacent faces of the standards, and a plate for each standard having a rib shorter in length than the channel and pivotally mounted therein.

6. A saw-guide comprising; a base; a pair of parallel standards rigid therewith; channels in the adjacent sides of the standards, and the faces thereof contiguous to and sloping' away from the channels; a plate for each standard having a saw-guiding face, a hack face, and a rib on the back face to run in the channel and turn therein, whereby the back face may have an amount of movement before its back face abuts the faces of the standards.

v7. The combination with a table, of a number of saw-guide supports carried thereby and each comprising a pair of comparatively inflexible parallel standards having' channels on their adjacent faces, an integral base therefor, and saw-guide plates provided with ribs pivotally mounted in said channels.

8. In a wood-sawing machine, the combination with a table, of a shiftable guide-support; a pair of standards carried by the support and each comprising two parallel channeled members; and saw-guide plates each having a rig-id rib adapted to be carried by and to turn in a channel in one of said members.

9. The combination with means to position work; of a pair of standards carried thereby, each comprising a pair of parallel members rigidly connected and having their adjacent sides channeled; a saw-guide plate foreach member having' a saw-guiding' face on one side and upon the other an integral rib shorter in length than the length of the channel and adapted to be carried thereby to reciprocate therein as a guideway and also to turn therein as a pivot-socket; a base for each standard; a socket for the same in which it may be turned; and means to clamp the base in the socket.

on said plain face; a standard having a pair ofv limbs provided with rounding channels to receive the ribs and 1n which they may turn, and faces to limit the turning of the plates.

il. A saw-guide comprising' a support; a

pair of sockets therein; a base mounted in each socket; a pair of parallel standards integral with each base; channels in the adjacent faces of the standards; and a plate for each standard having a rib shorter in length than the channel and pivotally mounted therein.

l2. ln a miter-boX the combination with a body portion; of a carrier swiveled thereon; a pair of sockets in the carrier; a saw-guide for each of said sockets and comprising a base to turn in a socket; a pair of parallel standards integral with the base; channels in the adjacent sides of the standards, the faces of the standards contiguousA to and sloping away from the channels; and a plate foreach stand- -ard having a saw-guiding face; a back face;

and a rib on the back face to run in the channel and turn therein, whereby the plate may have an amount of movement before its back face abuts the face of the standard.

1-3. In a miter-box, the combination with means for holdingl the work, of means to guide the saw in relation thereto and comprising a pair of posts arranged side by side, a pair of plates for guiding' the sides of a saw-blade, such plates being respectively pivoted to the inner faces of the posts.

14. A saw-guide comprising a support, a pair of parallel standards carried thereby, and a pair of plates to guide the sides of a sawblade and pivotally mounted upon the adjacent faces of the standards.

15. In a miter-boX, the combination with a work-support, of means to carry saw-guides; a pair of saw-guide standards independently mounted for rotation upon such carrier; sawguides carried thereby and organized for adjustment by the rotation thereof; and a tierod connecting such standards and having a pivot-point disposed in the axis of rotation of each of said standards.

16. A saw-guide comprising a support; a pair of parallel standards each having' a stem mounted in such support and adapted to rotate therein; a pair of plates to guide the sides of a saw and pivotally mounted upon the adjacent faces of the standards; a tie-rod for such supports; and a pivot for the tie-rod in the axis of rotation of each of the standards.

17. In a ruiter-box, the combination with a work-support, of means to carry saw-guides; a number of saw-guide standards independently mounted for rotation upon such carrier; saw-guides carried thereby and organized for adjustment by the rotation thereof; means IOO IIO

connecting such standards at their free ends; and a pivot therefor at each standard axially coincident With said standard.

18. A saw-guide comprising a support; a number of pairs of parallel standards each pair having a stem and mounted in such support and adapted to rotate therein; a pair of plates to guide the sides of a saw and pivotally mounted upon the adjacent faces of the standards; and means to connect the pairs of standards and pivoted thereto in the axis of rotation thereof.

19. In a miter-bo-X, the combination with a table, of a beam-arm pivoted thereto; a pair of saw-guides carried thereby each comprising a base member embodying a pivot, supports FRANCIS H. RICHARDS.

Witnesses:

CHAS. LYON RUSSELL, FRED. J. DoLE.

Images