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Propeller-and-Spoon Egg Beater: Spoon Arms Break the Swirl

William T. Nicholson, Providence, Rhode Island · Public domain (expired patent)

أنشأه

Emma

6. أكتوبر 2026

Propeller-and-Spoon Egg Beater: Spoon Arms Break the Swirl

A turning beater soon sets the whole liquid circling with it. William T. Nicholson of Providence, Rhode Island, received US 32,886, dated 23 July 1861, for an egg beater: a crank wheel with bevelled face teeth turns a pinion and a pair of propeller blades; under the pinion a disk with an elliptic groove rocks two arms ending "in the form of a spoon bill's beak," so "the circling currents occasioned by the blades of the propeller will be broken at regular intervals." It clamps into a socket on a table or lifts out for use by hand. This rung works out the stroke rates, then prints the crown wheel, pinion, cam and propeller, builds the frame and arms, and times a beating.

متقدم

About 5 hours, plus printing

التعليمات

Stroke rates

جارٍ تحميل دفتر Jupyter…

A crank wheel and pinion before it

The embedded blueprint drives two beaters off one wheel. Nicholson drives a propeller and lets a cam rock two spoon arms against its swirl.

Read US 32,886

"To the under side of the pinion E is secured the disk H (Fig. 5,) its lower surface being furnished with an elliptic groove or channel I. Two arms K K pivoted to the handle at c and d extend to the bottom of the propeller blade their lower extremities being in the form of a spoon bill's beak. A projecting ear e, e on each arm is inserted in the elliptic groove I whereby as the propeller shaft F is rotated to which the disk is attached a reciprocating motion is given to each of the arms."

Print the gears, cam and propeller

Print the 48-tooth crown wheel (/uploads/blueprints/propeller-spoon-egg-beater-crown-wheel.stl), the 12-tooth pinion (/uploads/blueprints/propeller-spoon-egg-beater-pinion.stl), the cam disk with its elliptic groove (/uploads/blueprints/propeller-spoon-egg-beater-cam.stl) and the propeller (/uploads/blueprints/propeller-spoon-egg-beater-propeller.stl). Print in PETG at 0.2 mm layers, 30 % infill, 4 walls.

المواد لهذه الخطوة:

خيط PETG1 قطعة

الأدوات المطلوبة:

طابعة ثلاثية الأبعاد بالخيط (FDM)

Frame and wheel

Cut a plywood handle frame. Bolt the crown wheel to it on an M5 screw with a crank near its rim, and drill a bearing for the propeller shaft so the pinion meshes the wheel's face.

المواد لهذه الخطوة:

لوح خشب رقائقي1 قطعة

براغي آلية1 قطعة

حلقة تثبيت مسطحة1 قطعة

صامولة سداسية1 قطعة

الأدوات المطلوبة:

منشار تخريم

مثقاب لاسلكي

طقم لقم ثقب

مفتاح ربط قابل للضبط

Shaft, cam and propeller

Epoxy the pinion, then the cam under it, on a 5 mm rod through the bearing, and the propeller on the rod's foot.

المواد لهذه الخطوة:

قضيب فولاذ طري1 قطعة

إيبوكسي ثنائي المكوّن1 قطعة

الأدوات المطلوبة:

منشار حديد

ملزمة منضدة

Spoon arms

Bend two arms of stainless wire with a spoon-shaped flat at the foot. Pivot each on a screw in the frame either side of the shaft, and bend a short ear on each into the cam's groove.

المواد لهذه الخطوة:

سلك من الفولاذ المقاوم للصدأ1 قطعة

برغي خشب #8 × 1 بوصة1 قطعة

الأدوات المطلوبة:

زرادية مستديرة الفك

كماشة مسطّحة الفكّين

طقم مفكات

قدمة رقمية 6 بوصات

The patent drawing

US 32,886 drawing sheet, public domain (expired patent).

With and without the arms

Beat two egg whites with the arms in the groove and time them to stiff peaks; lift the ears out and repeat with the propeller alone.

المواد لهذه الخطوة:

بيضة4 قطع

الأدوات المطلوبة:

وعاء خلط كبير من فولاذ مقاوم للصدأ

ساعة إيقاف

Arms that jam, a cam that throws them

Propeller-and-spoon egg beater troubleshooting.

Flow

History and honest limits

**William T. Nicholson** of Providence, Rhode Island, received US 32,886, dated 23 July 1861. The grooved disk is set with its longest diameter in the same plane as the propeller blades, so the arms clear the blades; the socket or chair fixes to a table by spurs and one wood screw, its inclined sides grasping the handle, which can be lifted out for use by hand. He claimed the reciprocating beaters combined with a revolving beater. **Honest limits.** FDM prints hold food in their layer lines, so wash well and replace when worn. A crown wheel and spur pinion stand in for his bevelled wheel, and a plywood frame for his handle and socket. Your times are the result.