US1127353A - Joint-marker. - Google Patents

Description

J; E.& L. s. GHELMO.

JOINT MARKER.

APPLICATION FILED APR.28, 1914.

Patented Feb. 2, 1915.

$ NORRIS PETERS CO PHOTD-LITHO WASHINGTONv D. c.

JOHN E. GHEL'MO AND LEONARD S. CHELIVIO, OF WEBSTER, WISCONSIN.

JOINT-MARKER.

Specification of Letters Patent.

Patented Feb. 2, 1915.

Application filed April 28, 1914. Serial No. 835,037.

To all whom it may concern:

Be it known that we, JOHN E. CHnLMo and LEONARD S. CHnLMo, citizens of the United States, residing at WVebster, in the county of Burnett and State of Wisconsin,

have invented certain new and useful Im provements in Joint-Markers, of which the following is a specification.

Our invention relates to new and useful improvements in joint markers of the type employed particularly by carpenters in marking the line on which the terminal of a board is to be cut.

The principal object of our invention is to provide a joint marker which consists essentially in a substantially U-shaped clamp which carries between its arms and adjacent its bight portion an oblong head block and is formed of resilient sheet metal so that the arms may be engaged against the opposite faces of the plank and will be thus held in the proper position during the application of the pencil or other marker.

A further object is to construct the arms or jaws of the U-shaped clamp from separate strips of sheet metal, each of which is formed to provide an outwardly opening channel which extends throughout the or portion of its length and is also bent to form an inwardly opening channel at its inner terminal so that there will be provided at the inner terminals of the two arms or jaws a pair of casings or housing which will receive the head-block and hold this member against rotation on the bolt employed in holding the jaws in adjusted spaced relation.

An object of equal importance with the foregoing is to construct our joint marker with such regard to proportion, number and arrangement of parts that it may be cheaply manufactured, will be durable and eiiicient in its action, and may be readily applied to or removed from any joist, plank or the like with a minimum expenditure of time.

The above and additional objects are accomplished by such means as are illustrated in the accompanying drawings, described in the following specification, and then more,

pz-irticularly pointed out in the claims, which are appended hereto and form a part of this application.

WVith reference to the drawings, wherein there has been illustrated the preferred embodiment of this invention as it is reduced to practice, and throughout the several views of which similar reference numerals designate corresponding parts, Figure 1 is a perspective view showing the joint marker applied to a plank; Fig. 2 is a detail perspective view of the joint marker; Fig. 3 is a top plan view; Fig. 1 is a section on the line H of Fig. 3; and Fig. 5 is a detail perspective view illustrating a modified form of the invention in operative engagement with a base board ready for marking of the same.

In the embodiment of our invention illustrated in the accompanying drawings, the joint marker consists essentially of a pair of jaws or arms 10 and 11 which are connected by a substantially U-shaped yoke 12, and are held in the desired spaced relation by a head-block 13 which is removably mounted between the inner terminals of the jaws or arms.

The arms 10 and 11 are substantially identical in construction, each being formed, as previously explained, from a strip of resilient sheet metal. In forming the jaws or arms the sheets of metal are first out along transverse lines, as indicated at 11. The metal sheets are then shaped to produce the outwardly opening channels 15 which extend throughout the major portion of the lengths of the arms, being defined by the outwardly and laterally bent longitudinal edges 16 and 17 of the metal sheets. Those longitudinal edge portions of each sheet of metal which lie between the incisions 14: and the inner terminals of the arms are bent to extend inwardly and laterally with respect to thebody walls 18 of the arms, as indicated at 19. flanges 19 of each arm of the device form the channels, indicated at 20. As has been hereinbefore explained, these channels 20 are adapted to receive the terminals of the spacer or head-block 13, the function of which will be hereinafter more fully explained.

In order to yieldably connect the clamping jaws or arms 10 and 11 so that they may, be adjusted to extend in various degrees of spaced relation for the purpose of receiving planks of different thicknesses, we have provided the connecting yoke 12, which, as hereinbefore explained, is formed from a strip of resilient sheet metal, and which is substantially U-shaped in conformation. The terminals of the members 12 are placed against the body portions 18 of the arm i members, being secured thereagainst by means of rivets or equivalent fastening do The inwardly directed edges or' vices, indicated. at 21. It is now to be explained that the member 12 normally tends to hold the clamping arms or aws 10 and 11 in relatively closed spaced relation and is, therefore, made from resilient sheet metal so that by introducing the spacer block 13 between the body walls 18 the user of the device may space the arms the dsired dis tance apart.

The spacer block 13 is preferably formed of wood, although, if so desired, rubberoid or any other composition of a suitable nature may be employed. As has been hereinbefore explained, the spacer block 13 is oblong in shape. The reason for which the spacer block is thus shaped is to enable the user of the device to adjust the arm members 10 and 11 for the reception of boardsof varying thicknesses. It will be seen upon reference to Fig 3 particularly that a longitudinally extending bore 22 is formed in the block 13, and that a second transversely extending bore 23 is also formed in this spacer block. It Will, therefore, be obvious that the adjusting bolt 24: maybe inserted through the alined apertures formed in the body walls 18, as shown in Fig. 3, and that the headblock 13 may be positioned either with its longitudinal bore 22 receiving the bolt 24 or with its tranverse bore '23 receiving the connecting bolt. Thus, if the head-block 13 is made one inch in length and one-half inch in thickness, it is obvious that it will space the inner faces of the body walls 18 one inch apart when its longitudinal bore 22 re 'ceives the connecting bolt. On the other hand, the members 18 may be spaced apart but one-half inch if the connecting bolt is received within the transverse bore 23. A wing nut 25 is, of course, provided for the projecting threaded terminal of the connecting bolt 9A for holding the block against withdrawal from the body walls 18.

Having thus described the structural details of our invention, we desire to direct particular attention to several of the most important advantages which result from the.

embodiment of our invention shown in the accompanying drawings. It will be apparent that the joint marker is relatively simple in construction and may, therefore, be cheaply manufactured. Furthermore, inasmuchas all the parts, with the eXception of the head-block 13, are formed of metal, the life of the marker will be of considerable duration. Again it is to be observed that the head-block 13 being provided with a longitudinal bore and a transverse bore makes it p'ossibleto space the arms 10 and 11 difierent distances for the reception of boards or the. like of difierentthicknesses- The final important feature is the fact that the head-block 13 isof a width equal to the distance, between the inner faces ofv the members 19 of each arm. Thus, when the marker, it is obviously held againstrotation upon the connecting bolt 24 by engagement of its longitudinal edges with the members 19.

In regard to the manner in which the joint marker is employed, attention is directed to Fig. 1 of the drawings, in which it will be seen that the two arms 10 and 11 are applied to the opposite faces of the plank to be marked, and that the spacer block 13 is engaged with the head of the plank. Inasmuch as the spacer block is held against rotation and is arranged at right angles to the arms 10 and 11, it is obvious that a pencil may be drawn along the outer edges of the members 16 and 17, and that the resultant line will be a true right angle to the edge of the plank. In other words, the marking device is capable of performing the ofiices of a carpenters square but is more efficient than the customary type of square in that it is provided with two clamping arms which, when engaged against opposite faces of the plank, hold the marker in the desired position.

VVhile the marker is adapted to serve in the manner above described, as a substitute for a carpenters square, this use of our invention is not the one primarily intended. The principal object which we have endeavored to obtain is the provision of a marker which is of especial value in putting on siding on the outside of a house, or fitting mop boards against the casings on the inside ofa building, or such similar work. The marker, when used in this manner, is placed astraddle of the board and up against the casing or piece that the board is to be fittedto, and then by drawing a pencil along the board, asshown in Fig. 1, the cutting line will be perfectly indicated so that the board may be sawed'to fit neatly and exactly against the casing or other piece. Ifthe casing or piece that the terminal ofthe board is to fit against is on a slant or angle, the marker will perfectly perform its function, for by being engaged along its longitudinal edge against the casing or other piece it will indicate on the board to be cut the proper cutting line.

It maybe well to explain that, while the arms 10 and 11 are resilient so far as their movement toward and away from each other is concerned, they are comparatively stifl and rigid so far as any movement parallel to the plane of their body walls 18 is concerned. Thus, while the arms by reason of their resiliency will act to grip the plank tov which they are applied, they will. not bendlongitudinally and disastrously cause the penciLor-other marking implement to ascribefa curved line; I

,..the,;modified form" of our. invention dis marker from a single sheet of metal which is cut and then bent to produce a substantially U-shaped body having the wings or flanges 26 on its arms. A spacer block 27 is, of course, interposed between the inner faces of the arms. As shown in Fig. 5, the marker may be employed in marking the cutting line on a base board in finishing the interior of houses. In such an application of the device the body of the marker is e straddled on the base board 28 and is disposed with one of its arms flatly engaging against the edge of the casing 29 so that, when the base board 28 is cut along the line marked, its terminal will conform to the inner edge of the casing.

In reduction to practice, it has been found that the form of this invention illustrated in the drawings, and referred to in the above description as the preferred embodiment, is the most eflicient and practical; yet realizing that the conditions concurrent with the adoption of this device will necessarily vary, it is desirable to emphasize the fact that various minor changes in details of construction, proportion and arrangement of parts may be resorted to, when required, without sacrificing any of the advantages of this invention, as defined in the appended claims.

Having thus described the invention, what is claimed as new is:,

1. In a device of the character described, a substantially U-shaped body member, a spacer block adapted to be interposed between the arms thereof, longitudinal dimension of the spacer block being lessthan the length of the body member whereby the arms thereof project beyond the block, and a connecting bolt passing through the arms and the spacer block.

2. A device of the character described in cluding a pair of channeled arms formed of resilient material, a substantially 'U-shaped yoke connecting the terminals of the arms, a spacer block interposed between the arms, the said arms of the body member projecting beyond the spacer block at both sides thereof, and a connecting bolt passing through the arms and spacer block for holding the arms in engagement with the spacer block.

3. A device of the character described including a pair of clamping arms formed of resilient material and having outwardly opening channels the major portion of their length and inwardly opening channels at their inner terminals, a substantially U- shaped yoke connecting the inner terminals of the arms, a spacer block interposed between the arms and having its terminals seated within the inwardly opening channels,

and a connecting bolt passing through the arms of the spacer block for holding the arms in engagement therewith.

4:. A device of the character described including a substantially U-shaped body member having resilient clamping arms, a spacer block interposed between the inner terminals of the arms, and a connecting bolt passing between the arms and the spacer block, the arms being adapted to engage against the opposite faces of the article to be cut, and the spacer block being adapted to engage against the adjacent edge thereof.

5. A device of the. character described including a pair of resilient clamping arms, each of said arms being formed from a strip of sheet metal having the major portion of its longitudinal edges directed outwardly and laterallygto form an outwardly opening channel and the remaining portion of its longitudinal edges directed inwardly and laterally to form inwardly opening channels, a U-shaped yoke connecting the inner terminals of the arms, a spacer block interposed between the arms and having its terminals seated in the inwardly opening channels, a connecting bolt/passing through the arms and the spacer block, and a wing nut threaded on the bolt for drawing the arms into engagement with the terminals of the spacer block, said spacer block being held against rotation by the inwardly directed edge portions of the arms.

6. In a device of the character described, a substantially U-shaped body member, a spacer block adapted to be inserted between the arms thereof and being of such dimensions as to be contained within the limits of the arms, and means for holding the arms in engagement with the spacer block.

7. A device of the character described including a substantially U-shaped body mem her having channel members providing stop flanges, a spacer block insertible between the arms of the body member, and means for detachably holding the block in position between the arms of the body member.

8. In a device of the character described, a substantially 'U-shaped body member having inwardly opening channel members, a spacer block having its terminals seated in the channel members, and means for detachably securing the block in the channels.

In testimony whereof we affix our signatures in presence of two witnesses.

JOHN E. GHELMO. [Ls] LEONARD s. CHELMO. [Ls] Witnesses:

JAMES L. Connor, NATHAN BORGMAN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington. D. C.

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