US1357481A - Combination instrument - Google Patents

Description

A. B. SMITH.

COMBINATION INSTRUMENT.

APPLICATION FILED OCT. I6, I9I9.

Patented N ov. V2,*1920.

PATENT OFFICE.

`ALFRED B. SMITH, OF ABERDEEN, WASHINGTON.

COMBNATION INSTRUMENT.

Specification of Letters Patent.

Patented Nov. 2, 1920.

Application filed @etober 1G, 1919.- Serial No. 330,947.

T 0 @ZZ whom t may concern.'

it known that I, Arai-nun B. SMiTI-r, a citizen of the United States, residing at Aberdeen, in the county of Grays Harbor and State of Washington, have invented certain new and useful lmprovements in Combination nstruments; and l do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to malte and use the saine.

This invention relates to an improved combination instrument of the pencil type and the principal object of the invention is to provide a combination device of the character described which will constitute a coinpass and will include a pencil and steel marker which may be used for marking where pencil would not readily show, the steel marker being so constructed and mounted that it will form the pivot point when the device is used as a compass.

Another object of theV invention is to provide improved means for locking the steel blade in an extended position thereby preventing the blade from moving out of the desired position when in use as a marker.

Another object of the invention is to so construct this device that the sleeve will be held against rotary movement when in a locked position, thus giving additional strength.

Another object of the invention is so construct the device that the parts forming the samecan not easily come apart, thereby producing a strong and durable device.

This invention is illustrated in the accompanying drawings, wherein:

Figure l is a view showing the improved device in side elevation with the marking blade in the folded position and thedevice ready for use as a compass.

Fig. 2 is a side elevation showing the marking blade in the extended position for use. c

Fig. 3 is a longitudinal sectional view through the arm carrying the marking blade with the blade extended and loclred.

Fig. l is a view similar to Fig. 3 with the blade in the folded position.

Fig. 5 isa perspective view of the locking sleeve removed from the arm carrying the sleeve.

This device is in the form of a compass having arms 10 and 1l which are formed of sheet metal blanks bent to provide the tubular arms having pivot ears l2 and 13 extending therefrom and positioned in overlapping relation with the pivot pin lelextending through the ears to pivotally connect the arms. The pencil l5 is inserted in the tubular arm l0 and will be held therein by frictional engagement. The arm l1 is provided upon its outer side and adjacent its free end with a slot 1G to receive the resilient locking tongue l? carried by the slide i8 and ei:-

tending through a. slot 19 formed in the slide. rlhis slide is further provided with tongues which extend beyond the ends of the arms ll when the slide is moved downwardly and are adapted to retain the steel marker blade in the extended position as will be hereinafter brought out.

A core 2l is positioned in the a in 1l and rotatably mounted therein and is provided adjacent its lowerV end with a cutout or pocket 22 which registers with the slot 16 and receives .the tongue 17 thus permitting the core to beheld against rotary movement when the marker is inthe extended position. This core extends-beyond the free end of the arm ll and carries a head 23 which is similar `to the end portion of a pen knife and carries a blade 2lwhich is pivotally mounted and is provided with a spur 25 acting as a pivot point for the compass whenthe marking blade 2d is in the folded position. n spring 26 similar to the spring of a pen knife is carried by this core and extends into the head to enga-ge the heel of the blade and retain the blade in an adjusted position. From an inspection of the drawings it will be evident that the tongues 20 may lit into the head beneath the blade and against the outer face of the spring 26 when the marker blade is extended as shown in Fig. 2, thereby securely locking the core against rotary movement and preventing the blade from turning from the desired position when the device is in use as a marker.

lWhen the device is used as a compass, the core will be rotated and the marker blade turned inwardly thus extending .tl e spur to provide the pivot point for the compass. llflhen the device is not in use, it will be left in this position and the arms can then be brought together and the device placed in the pocket without any danger of the sharpened end of the marking blade catching and tearing the pocket. wWhen the device is used as a marker for markingwet wood and other substances which couldrnot be readily marked with a lead pencil, the blade will be swung outwardly and the core then rotated so that the blade will extend trom the outer side oi the arm` 11. The sleeve will then be moved downwardly so that the tongues 20 engage the head and the blade will then be securely held in the extended position thus permitting it to be used as a marker. W hen used in this manner,- the two arms will be brought together thus providing a good handle. rlhis device can be used as an ordinary pencil when in the folded position and Afurther. when in this position can be used as a pair ot dividers as well as beingused as a compass. There has thereforebeen provided a device which will be very convenient for use by carpenters or others having use for similar instruments. It should be further noted that this device maybe set with the arms apart a desired distance and moved along a board with the free end of arm ll engaging the side edge ofthe board and the'pencil extending across the tace of the board and making a scribe line as the device is moved.

What is claimed is:

l. A device of the character described comprising tubular arms pivotally connected at their upper ends, a core rotatably mounted in one of said arms, a head connected withsaid core and positioned beyond the outer ends'ot the arms, a marking blade pivotally connected with the head for movement tromV a position at substantially right angles to thearms to a position substantially parallel to the arms with its tree end extending toward the pivoted ends ot the arms, a lealZ spring engaging the blade to retain the saine in an adjusted position, said arm being provided with an opening and the core with a pocket to register with the openings of the arm, a sleeve slidably mounted upon the arm and having itslower end provided with tongues for engaging the head to retain the head against rotation when the marking blade is in anextended position at substantially right angles to the arm, and a resilient tongue carried by the sleeve for passing through the registering opening and pocket to retain the sleeve against rotation when the blade isin the extended position.

2. A device et the character described comprising tubular arms pivotally connected at their upper ends, a core rotatably mounted in one of said arms and extending beyond the lower end thereof, ahead carried by the core and positioned beyond the lower end of the arm, marking blade having a heel pivotally connected with the head,

the heel being provided with a spur for constituting pivot point when the blade is in a folded position, a sleeve slidably mounted upon the arm, and tongues carried by the sleeve and extending to engage the head for locking the head against rotary movement when the blade is in an extended position.

3. A device of the character described comprising arms pivotally connected at their upper ends, one of said arms being hollow, a core rotatably mounted in the hollow arm, na head carried by the core, a marking blade having a heel pivotally connected with the head and provided with a spur extension constituting a pivot point when the marking blade is in a folded position, a locking sleeve slidably mounted upon the hollow arm tor engaging the head to retain the core against rotarymovement whenthe blade is in an extended position, and means tor releasably locking the sleeve against rotary movement upon the hollow arm when in engagement with the head.

t. A device of tie character described comprising arms pivotally connected at their upper ends, one ot said arms being hollow, a core rotatably mounted in the hollow arm, a marking blade pivotally connected with the rotary core tor movement from a folded to an extended position, and means carried by the hollow `arm for engaging the head to releasably` retain the core against rotary movement when the marking blade is in an extended position.

5. A device of the character-described comprising arms pivotallyconnected, one of said arms being adapted to carry a renewable marking implement, a blade carrier rotatably connected with the second arm, a marking blade pivotally connected .with the blade carrier and having a spur extension constituting a pivot point Vfor Vthe device when the marking blade is in a folded position, and means for releasably retaining the blade carrier against rotary movement.

6. ln a device ot the character described, a pair o1c pivoted members, one of said members carrying a marking element, and a pivoted spur pivotally carried by the other pivoted member and capable of being disposed parallel to said member or at anV angle thereto and having an extension forming a marking arm when the spur is extended at an angle to the pivoted member.

i". In a device of the character described, a pair of pivoted members, one of said members carrying a marking element, and a spur pivotally connected with `the other pivoted member and capable of being disposed parallel to said member or at an angle thereto, the spur when in the first mentioned position constituting a centering point for the marking element, and the spur having an extension forming a Vmarking element when the spur is in the latter position.

In testimonywhereof l affix my signatur in presence of two witnesses.

ALFRED B. SMITH. Witnesses: A

YGLENN G. Eoirnnr, GIBsoN.

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