US 2299923 A
Description (OCR text may contain errors)
Oct. 27, 1942. 0, L 2,299,923
MUSICAL INSTRUMENT File i Dec. 6, 1941 ATTORNEYS Patented Oct. 27, 1942 UNHTED OFFICE MUSICAL INSTRUMENT Otis D. Nail, Molino, Fla. Application December 6, 194-1, Serial No. 421,984
My invention relates to musical instruments, and has among its objects and advantages the provision of an improved guitar so designed as to embody exceptional durability and tone quality, in addition to being attractive in appearance.
In the accompanying drawing:
Figure 1 is an inside face view of the top of the instrument illustrating reinforcements associated therewith;
Figure 2 is an inside face view of the back i1- lustrating its reinforcements;
Figure 3 is a sectional view along the line 3-3 of Figure 1;
Figure 4 is a sectional detail view illustrating the manner in which the neck of the instrument is pegged to the instrument proper; and
Figure 5 is a sectional view along the line 55 of Figure 4.
In the embodiment selected for illustration, the instrument includes a front Ill provided with side holes l2. The back I4 is of the same contour as the front l and the two parts are fixedly connected through the medium of a front side I6, a back side l8, center side slabs 2D and corner blocks 22. All these parts are glued into a unitary structure.
To the inner face of the front ID are glued transverse sills 24, 26 and 28. All these sills extend the full width of the front. Similar transverse sills 30, 32 and 34 are glued to the back l4. The sills 30, 32 and 34 are located in vertical alignment with the respective sills 24, 26 and 28. To the front ID are glued substantially longitudinal bridge strengthening sills 36, these sills having tongues 38 secured in correspondingly shaped recesses in the sills 26 and 28.
To the front side [6 is glued a back block 4 having a peg 42 secured thereto. A similar block 44 is secured to the back side 18, the blocks 40 and 44 being located on the longitudinal medial line of the instrument.
The neck 46 of the finger board structure 453 is provided with a dovetail 50 glued in a dovetail groove 52 in the block 44. The block 44 and the neck 46 are provided with aligned bores for the reception of a key pin 54, which key pin is glued to both the neck and the block. Additional key pins 56 and 58 respectively anchor the pin 54 to the block 44 and the neck 46. Both pins 56 and 58 are also glued in position.
Both the front Ill and the back l4 are slightly arched and each of about one-eighth inch thickness throughout their central areas and thinning slightly toward their perimeters. A box structure in accordance with the foregoing description is characterized by exceptional durability, is attractive in appearance and possesses exceptional tone qualities. Heretofore brace rods have been employed, which brace rods have extended from the dovetail of the neck to the back block. Such reinforcement has a tendency to pull in the back block in cases where the glued joints give away. It is a common occurrence for guitars to become unglued in the back region because of moisture from the arm of the player, and the center brace rod embodies a severe strain on the back block.
Instruments of this nature can not be supplied with heavy reinforcement, sinc such reinforcements tend to deaden the tone of the instrument. In the present case, the instrument is reinforced in such manner as not to impair the tone qualities of the instrument. Th neck 46 is securely keyed by three pegs and eliminates the necessity of heavy reinforcements at the center of the instrument. The strings, adjustments therefor, and the bridge may be of conventional types.
Without further elaboration, the foregoing will so fully illustrate my invention, that others may, by applying current knowledge, readily adapt the same for use under various conditions of service.
1. A guitar comprising a front and a back, front and back side means connecting the front and the back, center sid means connecting the front and the back, corner blocks connecting the center side means with the respective front and back side means, blocks respectively secured to said front and back side means, a finger board structure having a neck, a dovetail connection between said neck and said front block, a key pin connecting the neck with said front block, a key pin connecting said first-mentioned key pin with said front block, and a key pin connecting said first-mentioned pin with said neck.
2. In a guitar having a front block, said front block being provided with a dovetail groove, a finger board structure having a neck, said neck being provided with a dovetail fitting inside said dovetail groove and glued therein, a pin connecting said neck with said front block and glued thereto, a second pin securing said first pin to said front block, and a third pin securing said first pin to said neck.
3. In a musical instrument of the string type employing a body and a bridge, a front, reinforcing sills secured to the front, bridge strengthening sills secured to said front and said first-mentioned sills, a front block secured to said body, a finger board structure having a neck, a dovetail joint connecting said neck with said front block, a key pin connecting the neck with the front block, and key pins respectively connecting said front block and the neck with said firstmentioned key pin.
OTIS D. NALL.